29.What can be inferred about the footprints found in French caves mentioned in the last paragraph?(A)They show more detail than the Laetoli prints.(B)They are of more recent origin than the Laetoli prints.(C)They are not as informative as the Laetoli prints.(D)They are more difficult to study than the Laetoli prints30.Which of the following terms is defined in the passage? (A) “hominids” (line 3)(B) “arch” (line 9)(C) “photogrammetry” (line 16)(D) “silicon resin molds”(line 29)Questions 31-40The livelihood of each species in the vast and intricate assemblage of living things depends on the existences of other organisms. This interdependence is sometimes subtle, sometimes obvious. Perhaps the most straight forward dependence of one species on another occurs with parasites, organisms that live on or in other living things and derive nutrients directly from them. The parasitic way of life is widespread. A multitude of microorganisms( including viruses and bacteria) and an army of invertebrates – or creatures lacking a spinal column (including crustaceans, insects, and many different types of worms ) –make their livings directly at the expense of other creatures. In the face of this onslaught, living things have evolved a variety of defense mechanisms for protecting their bodies from invasion by other organisms.Certain fungi and even some kinds of bacteria secrete substances known as antibiotics into their external environment. These substances are capable of killing or inhibiting the growth of various kinds of bacteria that also occupy the area, thereby eliminating or reducing the competition for nutrients. The same principle is used in defense against invaders in other groups of organisms. For example, when attacked by disease-causing fungi or bacteria, many kinds of plants produce chemicals that help to ward off the invaders.Members of the animal kingdom have developed a variety of defense mechanisms for dealing with parasites. Although these mechanisms vary considerably, all major groups of animals are capable of detecting and reacting to the presence of “foreign” cells. In fact, throughout the animal kingdom, from sponges to certain types of worms, shellfish, and all vertebrates (creatures possessing a spinal column), there is evidence that transplants of cells or fragments of tissues into an animal are accepted only if they come from genetically compatible or closely related individuals.The ability to distinguish between “self” and “nonself”, while present in all animals, is most efficient among vertebrates, which have developed an immune system as their defense mechanism. The immune system recognizes and takes action against foreign invaders and transplanted tissues that are treated as foreign cells. 31. What does the passage mainly discuss?(A) how parasites reproduce(B) how organisms react to invaders(C) how antibiotics work to cure disease (D) how the immune systems of vertebrates developed32. The word “intricate” iii line 1 is closest in meaning to(A) difficult(B) widespread(C) critical (D) complex33. The expression “an army” in line 6 is closest in meaning to (A) an illness(B) an attack(C) a large number(D) a distinct type34. The expression “an army in line 6 is closest in meaning to (A) an illness(B) an attack(C) a large number(D) a distinct type35. According to the passage, some organisms produce antibiotics in order to (A) prevent disease in humans (B) aid digestion(C) fight off other organisms(D) create new types of nutrients35.The word “vary” in line 19 is closest in meaning to (A) differ(B) endure(C) balance(D) contribute36. The word “they” in line 23 refers to (A) sponges, worms and shellfish(B) vertebrates(C) individuals(D) transplants37. According to the passage, a transplant of tissue between genetically incompatible organisms will result in the transplanted tissue (A) becoming a parasite(B) being treated as an invader(C) altering its genetic makeup(D) developing a new immune system
| 你给文章评几分: |
I happen to be writing to make you be aware of what a notable experience our princess gained checking your web site. She came to understand such a lot of pieces, most notably what it’s like to have an amazing teaching spirit to have folks very easily learn about certain complicated things. You actually exceeded people’s expectations. Thank you for providing such useful, dependable, revealing and also fun tips on that topic to Lizeth.
I really like that. You touched my heart!
Im no professional, but I consider you just made an excellent point. You undoubtedly understand what youre talking about, and I can seriously get behind that. Thanks for being so upfront and so honest.
COSMETIC DENTISTRY…
[...]we prefer to honor numerous other world-wide-web web-sites on the net, even if they aren?t linked to us, by linking to them. Underneath are some webpages worth checking out[...]…
extractor fans…
[...]Here is an excellent Weblog You may Discover Intriguing that we Encourage You[...]…
Good day! Would you mind if I share your blog with my myspace group? There’s a lot of folks that I think would really appreciate your content. Please let me know. Many thanks
some truly excellent content on this web site , thanks for contribution.
I would like to express appreciation to you for rescuing me from this trouble. Just after surfing through the world-wide-web and obtaining concepts which are not powerful, I assumed my entire life was well over. Existing devoid of the answers to the issues you have sorted out as a result of your good report is a critical case, as well as the kind which could have negatively damaged my entire career if I had not noticed your website. Your good skills and kindness in dealing with all things was precious. I am not sure what I would have done if I hadn’t encountered such a thing like this. It’s possible to now look forward to my future. Thank you so much for your reliable and result oriented guide. I will not think twice to recommend the website to any individual who ought to have guidelines on this topic.
After researching a number of of the weblog posts on your web site now, and I truly like your way of blogging. I bookmarked it to my bookmark web site list and will likely be checking again soon. Pls check out my website as effectively and let me know what you think.
Your place is valueble for me. Thanks!…
I am glad for commenting to make you understand of the awesome encounter my friend’s princess experienced browsing your webblog. She came to understand many details, including what it is like to have an incredible giving nature to let other individuals just learn about selected advanced topics. You truly exceeded my desires. Thanks for providing the practical, dependable, revealing not to mention unique tips about the topic to Tanya.
I enjoy, cause I found just what I was looking for. You have ended my four day long hunt! God Bless you man. Have a great day. Bye
i wish to have some diamond necklace but they’re quite expensive’
I simply wanted to construct a quick remark in order to express gratitude to you for all of the nice pointers you are showing on this website. My time consuming internet search has finally been honored with incredibly good suggestions to write about with my family and friends. I would declare that most of us readers are definitely blessed to exist in a perfect site with very many lovely people with insightful hints. I feel rather grateful to have used the site and look forward to tons of more fabulous times reading here. Thank you again for a lot of things.
Comment…
Thanks for spending the time to discuss this, I feel strongly about it and love studying more on this topic. If possible, as you turn out to be an expert, would you mind updating your blog with more details?…
I definitely enjoy every little bit of it and I have bookmarked your blog.
Thanks for the great info.
Have you already setup a fan page on Facebook ?,.:”;
Valuable info. Lucky me I found your web site by accident, and I am shocked why this accident did not happened earlier! I bookmarked it.
Comment…
Awesome job on this post….
Comment…
Youre so cool! I dont suppose Ive read anything like this before. So nice to find somebody with some original thoughts on this subject….
Hiya, I’m really glad I’ve found this info. Today bloggers publish only about gossips and web and this is actually frustrating. A good website with interesting content, that is what I need. Thank you for keeping this web site, I’ll be visiting it. Do you do newsletters? Can’t find it.
It’s highly helpful for me. Massive thumbs up for this weblog post!
I was very pleased to find this website. I wanted to thank you for your time for this wonderful post!! I definitely enjoy reading it and I have you bookmarked to check out new stuff you blog post.
One of my favorite posts.
I am often blogging and i really appreciate your content. The article has really peaked my interest. I am going to bookmark your site and keep checking for new information.
racing game…
Some really nice stuff on this web site , I enjoy it….
Aѕ a blow owneг I believe the subject matter herе is reallywondегful. І thаnk you for youг harԁ wоrk. You ѕhоulԁ kеep it up forever! Best of luck..
I want to get across my affection for your kindness giving support to people who must have assistance with that study. Your real dedication to passing the solution along had been incredibly valuable and has consistently enabled individuals like me to reach their endeavors. Your entire informative help denotes this much a person like me and a whole lot more to my colleagues. Regards; from everyone of us.
Thank you a lot for giving everyone an extremely terrific chance to read from this web site. It is often so superb and as well , jam-packed with amusement for me personally and my office friends to visit the blog the equivalent of 3 times weekly to read through the newest items you will have. Not to mention, I am actually happy considering the good pointers served by you. Some two tips in this posting are unquestionably the most impressive we have all ever had.
I feel you already have social bookmarking for your weblog see the footer. However that is from another website. I assume you wish to make it direct? There are numerous methods to do this however none of them are sio easy so you want do some exhausting work. Attempt http://www.pitstop.getlisted.co.nz/wof-christchurch
buried up…
might be very challenging and plenty of parents find yourself making an attempt to drive their kids to take up their careers….
I simply couldn’t go away your web site prior to suggesting that I extremely loved the standard info an individual supply on your visitors? Is gonna be again often to check up on new posts
Very stimulating blog commentary… definitely something to think about =). Thanks for sharing this.
Vi på billiga webbhotell kan hjälpa dig utvälja ett billigt och bra webbhotell. Väldigt många webbhotell har mycket att erbjuda samtidigt som andra sorgligt nog använder oärlig marknadsföring för att locka så många kunder som möjligt, som sedan skapar problem för kunderna.
article blaster…
Nice web site, good and easy on the eyes and nice content material too. Do you want many drafts to make a submit?…
Howdy! I know this is somewhat off topic but I was wondering which blog platform are you using for this website? I’m getting fed up of WordPress because I’ve had problems with hackers and I’m looking at alternatives for another platform. I would be fantastic if you could point me in the direction of a good platform.
Hello, http://www.cetstudy.cn/cet-experience/89575.html is a genuinely terrific release. In concept I’d would rather create like this as well taking time and genuine effort to manufacture a brilliant write-up… but what can My partner and i say… I procrastinate alot not appear to have anything done. Thank You. odloty
Hello, Neat post. There can be a difficulty along with your internet site in internet explorer, could test this¡K IE nonetheless will be the marketplace leader and a large portion of people will leave out your excellent writing due to this issue.
Beging with the entire wales effectively before just about any planking. Our own wales can easily compilation of calculated forums those thickness analysts could be the related to some of the shell planking along with a lot more significant damage so that they project following dark planking. planking
Howdy very cool blog!! Guy .. Excellent .. Superb .. I will bookmark your site and take the feeds also¡KI am happy to seek out a lot of useful information here in the put up, we want work out more techniques in this regard, thanks for sharing. . . . . .
Thanks for writing this. I really feel as though I know so much more about this than I did before. Your blog really brought some things to light that I never would have thought about before reading it. You should continue this, Im sure most people would agree youve got a gift.
a real fun…
video games involve running and climbing things which are useful in helping them to train their bodies and keep away from obesity. However there are certain…
woh I like your articles , saved to fav! .
excellent issues altogether, you simply received a logo new reader. What might you recommend in regards to your publish that you simply made some days in the past? Any certain?
I am often to blogging and i really appreciate your content. The article has really peaks my interest. I am going to bookmark your site and keep checking for new information.
Useful info. Fortunate me I found your website unintentionally, and I’m shocked why this twist of fate did not happened earlier! I bookmarked it.
Can I say that of a relief to locate somebody that in fact knows what theyre talking about more than the internet. You undoubtedly know how to bring a challenge to light and produce it important. The diet ought to take a look at this and recognize why side within the story. I cant believe youre not more well-liked when you absolutely offer the gift.
Sites You Should Check Out…
http://www.exhibitgroup.getlisted.co.nz/hire-equipment-auckland...
Nachrichten rund um die deutsche und internationale Wirtschaft finden immer mehr Publikum auch aus Schichten die sonst nichts mit Finanzen zu tun haben. Auf der Suche nach Finanznews werden auch gerne die online Nachrichten der verschiedensten Finanznews online Nachrichten Blogs genutzt.