问题
选择题
人类每年从自然界中提取大量的金属铁，下列关于铁的说法正确的是 [ ]
A.铁是由钢冶炼成的
B.炼铁的过程是把铁矿石变成纯净的氧化铁
C.生铁是含有碳的铁合金
D.被腐蚀后的铁制品属于不可回收垃圾
答案
答案：C
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人类每年从自然界中提取大量的金属铁，下列关于铁的说法正确的是 [ ]
A.铁是由钢冶炼成的
B.炼铁的过程是把铁矿石变成纯净的氧化铁
C.生铁是含有碳的铁合金
D.被腐蚀后的铁制品属于不可回收垃圾
答案：C
| 完形填空。 | |||
| I work in a school library. There are many kinds of 1 in it. For example (例如), books 2 English, science, history, music, and so on. You 3 do some reading or borrow books from it. But there are some 4 .You must obey (遵守) them. When you are reading in the library, you have to 5 quiet. Don't talk loudly 6 make any noise. You can't listen to music, 7 . You 8 take your bags or wet umbrellas into the library. 9 or drink in the 1ibrary. You can borrow books from the library, but you can't 10 them to others. You have to take good care of (好好保管) them and return them on time (按时归还). If the library books are lost, you have to pay for them. | |||
| ( )1. A. people ( )2. A. about ( )3. A. can ( )4. A. magazines ( )5. A. / ( )6. A. and ( )7. A. also ( )8. A. aren't ( )9. A. No eating ( )10. A. lent | B. books B. in B. have to B. rules B. are B. but B. either B. don't B. Not cat B. lended | C. magazines C. at C. can't C. CDs C. be C. or C. too C. can C. Don't eat C. lends | D. newspapers D. from D. don't D. questions D. have D. because D. and D. can't D. Can't eat D. lend |