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问题 选择题

我国在20世纪80年代兴起桑基鱼塘生产模式，实现了“原料-产品-原料-产品”的循环生产模式，它不属于[ ]

A．生态经济

B．循环经济

C．生态工程

D．生态农业

答案

答案：C

选择题

每种生物都有独特的生存本领，草履虫、酵母菌、衣藻等小小的单细胞生物也能进行独立生活．单细胞生物（　　）

A．必须生活在水中

B．都是分解者

C．都能进行呼吸作用

D．都吸收现成有机物作为营养
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填空题

The problem is my weight. I’m just 1.57 meters high, but51. ______
my weight is 75 kilos. Many students often make a fun 52. ______
of me. Some boys were unfriendly for me—they call 53. ______
me "meat ball". That makes me to feel unhappy. 54. ______
Although I’m a bit too fat, yet I feel very well. I 55. ______
enjoy my meal. I love eating meat very much. And I like 56. ______
sweet food, though. I often have sugar with tea, milk. In57. ______
the past two months I had put on 5 kilos. So I’m becoming58. ______
more and more worried this problem, but I don’t 59. ______
know to lose weight quickly. Could you help me, dear doctor. 60. ______
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