如图表示生物的哪项基本特征（ ）
A．可以繁殖
B．需要营养
C．能够生长
D．光合作用
生物的共同特征有：①生物的生活需要营养；②生物能进行呼吸；③生物能排出身体内产生的废物；④生物能对外界刺激作出反应；⑤生物能生长和繁殖；⑥生物都有遗传和变异的特性；⑦除病毒以外，生物都是由细胞构成的．生物体能够由小长大．生物体发育到一定阶段，就开始繁殖下一代，如图表示种子的萌发．可见选项C符合题意．
故选：C．
| 完形填空。 | |||
| Last January I was given a chance to work in another country. At first, I lived a 1 life, but soon I met a group of new friends and they were really nice. Then something 2 happened. One of our friends suffered from kidney stones (肾结石), which had to be 3 surgically as soon as possible. But it was not as 4 as that! Our friend could not 5 the operation, which put him into deep 6 . I didn't know how to help him because I didn't have any money either. 7 , I never lost hope. Instead I tried to think of other 8 and told him not to worry because everything would be all right. Before I left the hospital, I talked to the surgeon and asked him to do the surgery, saying I would pay the expenses the next day 9 I had that kind of money. Well, I must have been 10 because the surgeon agreed to do it! But how was I going to get that much money? All I knew was that I needed to help my friend! Although it could be 11 to deal with this kind of situation, I decided to make some efforts. I tried to borrow money but failed. I tried 12 my things but no one wanted them. Then I had the idea of talking to my 13 . I asked him if I could have my next two months' salary in advance-without even thinking on how I would 14 for two months with no money. He was surprised and asked me the reason. I told him that I had a friend who was really in need. 15 I convinced him too and then he gave my two months' salary without any 16 ! Upon getting the money, I ran to the hospital and paid all the bills. My friend didn't know how to thank me. I just said, "Come on! Give me a 17 !" Friendship may not only be found at the happy moment but sometimes you can find it on the 18 time in your life! I've done a good thing by being a (an) 19 friend and I think it is well worth the 20 . | |||
| ( )1. A. private ( )2. A. strange ( )3. A. removed ( )4. A. terrible ( )5. A. stand ( )6. A. anxiety ( )7. A. Thus ( )8. A. reasons ( )9. A. even if ( )10. A. encouraging ( )11. A. challenging ( )12. A. saving ( )13. A. colleague ( )14. A. adapt ( )15. A. Luckily ( )16. A. analysis ( )17. A. favo ( )18. A. best ( )19. A. supportive ( )20. A. tolerance | B. lonely B. wrong B. reduced B. painful B. consider B. confusion B. Otherwise B. options B. as if B. annoying B. disturbing B. handling B. relative B. survive B. Slightly B. dignity B. hug B. longest B. sensitive B. sympathy | C. colorful C. unexpected C. examined C. simple C. perform C. embarrassment C. However C. symptoms C. so that C. astonishing C. amazing C. donating C. boss C. continue C. Constantly C. hesitation C. promise C. strangest C. aggressive C. pressure | D. normal D. unfair D. lifted D. special D. afford D. dissatisfaction D. Therefore D. expectations D. in case D. convincing D. scaring D. selling D. surgeon D. wander D. Occasionally D. remark D. reply D. toughest D. attentive D. effort |