问题
选择题
| 沪蓉高速大别山特长隧道贯通，全场4901米，其中用四舍五入将4901保留2个有效数字应为（ ） |
| A.49×102 B.4.9×103 C.5.0×103 D.5×103 |
答案
答案：B
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| 沪蓉高速大别山特长隧道贯通，全场4901米，其中用四舍五入将4901保留2个有效数字应为（ ） |
| A.49×102 B.4.9×103 C.5.0×103 D.5×103 |
答案：B
| 完形填空 | |||
| This is a car. It 1 my car. That is a 2 ,too. It is your car. My car is 3 Chinese car. It is a fine(好的)car. 4 car is a Japanese car. It is 5 fine car. | |||
| ( )1. A. am ( )2. A. bus ( )3. A. a ( )4. A. I ( )5. A. no a | B. is B. bike B. an B. My B. a no | C. are C. car C. the C. You C. a not | D. be D. jeep D. / D. Your D. not a |