问题
单项选择题
经生产、技术部门同意，斗装废钢中允许配入部分渣钢，但渣钢必须经过处理，其含钢量按体积估算应大于（）。
A、60%
B、70%
C、80%
D、90%
答案
参考答案：B
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经生产、技术部门同意，斗装废钢中允许配入部分渣钢，但渣钢必须经过处理，其含钢量按体积估算应大于（）。
A、60%
B、70%
C、80%
D、90%
参考答案：B
| 完形填空。 | ||
| Mr. Smith 1 in a post office three years ago. When he was sixty, he retired. Now he and his wife stay at home and his children work in 2 city. The old man does all housework and he has nothing to do at home. He likes neither reading nor 3 games. At first he didn't know how to 4 the free time. Mr. Hunt 5 was two years older than him asked to go fishing with him. "It's a good sport," said Mr. Hunt. "I'm sure you'll soon be 6 in it." "That's easy. Go fishing with me tomorrow morning and I'll 7 you." Mr. Smith decided 8 his luck. The following day the two old friends came to a river and began to fish. Suddenly Mr. Smith said, "I say, 9 do those little red things cost?" "You mean the floats (浮子)? Oh, they're cheap. What made you ask me such a 10 ?" "I owe (欠) you for one. Mine has just sunk (下沉)." | ||
| ( )1. A. work ( )2. A. other ( )3. A. playing ( )4. A. spend ( )5. A. who ( )6. A. interesting ( )7. A. discover ( )8. A. trying ( )9. A. how many ( )10. A. problem | B. worked B. the other B. play B. take B. which B. interested B. teach B. to try B. how far B. answer | C. works C. another C. plays C. cost C. what C. interest C. follow C. tried C. how much C. question |