问题
选择题
组成纤维素，纤维素酶和控制纤维素酶合成的基因三者的基本单位依次是 [ ]
A．葡萄糖、葡萄糖和氨基酸
B．葡萄糖、氨基酸和核苷酸
C．氨基酸、氨基酸和核苷酸
D．淀粉、蛋白质和DNA
答案
答案：B
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组成纤维素，纤维素酶和控制纤维素酶合成的基因三者的基本单位依次是 [ ]
A．葡萄糖、葡萄糖和氨基酸
B．葡萄糖、氨基酸和核苷酸
C．氨基酸、氨基酸和核苷酸
D．淀粉、蛋白质和DNA
答案：B
| 情景交际。 | |
| A: Hello, Zhang Ling. B: Hello, Bruce. Where are you going? A: 1 _ B: The hospital? 2 A: Oh, I've got a little headache and cough. I'm afraid I have got the bird flu (禽流感). B: Let me have a look. Don't worry. Nothing serious. Just a cold. Drink more water and you'll be fine soon. Let's go to the movie now. A: To the movie? Is there anything new on show? B: Yes; Hero. 3 A: Of course, I have. I have got the VCD. B: _ 4 _ A: No problem! Let's go to my home now. B: _ 5 _ Thanks, Bruce. A: It's my pleasure. Let's go.
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