问题
单项选择题
卜氏束纤维强力仪校准后，滑锤应能在（）秒钟内从25N刻度滑行到90N刻度。
A、4
B、3
C、2
D、1
答案
参考答案：D
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卜氏束纤维强力仪校准后，滑锤应能在（）秒钟内从25N刻度滑行到90N刻度。
A、4
B、3
C、2
D、1
参考答案：D
| 择方框中所给的短语完成句子，每个短语限用一次。 | |
2. —Let's go to the Art Center. There are many paintings _____ —That sounds great. 3. More and more students _____ too much homework. They have to go to bed late every day. 4. The wallet must _____ Sam. His ID card is in it. 5. —How are you _____ your classmates in the new school? —Very well. We often help each other. 6. We haven't _____ such a place. Where is it? 7. —Carol, could you please _____ the TV? The baby is sleeping in the room. —I'm sorry. I will do it right away. 68. He _____ science when he was young. Now he is a great scientist. 9. The shop is popular because it sells clothes _____. 10. Zhou Feng never gives up learning English _____ he has some trouble with it. |