问题
不定项选择题
下列叙述错误的是 [ ]
A．合金材料中可能含有非金属元素
B．人造纤维、合成纤维和光导纤维都是有机高分子化合物
C．加热能杀死流感病毒是因为病毒的蛋白质受热变性
D．在汽车排气管上加装“催化转化器”是为了减少有害气体的排放
答案
答案：B
搜题请搜索小程序“爱下问搜题”
下列叙述错误的是 [ ]
A．合金材料中可能含有非金属元素
B．人造纤维、合成纤维和光导纤维都是有机高分子化合物
C．加热能杀死流感病毒是因为病毒的蛋白质受热变性
D．在汽车排气管上加装“催化转化器”是为了减少有害气体的排放
答案：B
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| Do you often think of your parents? You may say, "Of course, I 1 .I buy a present for my mother on Mother’s Day and on Father’s Day I give my father 2 , too.” But what about the other days of the year ? I have a friend whose parents live in another city. One day 1 went to see her. We had a nice conversation. Then she wanted to 3 . So she dialed(拨号) the number, but then she put down the phone. After about fifteen 4 , she dialed the number again “Hi, Mom… | |||
| ( )1. A. will ( )2. A. a cake ( )3. A. make a call ( )4. A. seconds ( )5. A. How ( )6. A. fast ( )7. A. little ( )8. A. always ( )9. A. bad ( )10. A. think of | B. do B. a kiss B. pay a visit B. minutes B. What B. slow B. quick B. never B. clever B. look after | C. won’t C. some money C. have a rest C. hours C. Why C. healthy C. no C. seldom C. good C. call up | D. don’t D. a present D. go for a walk D. days D. When D. careless D. enough D. sometimes D. sick D. 1isten to |