汽车在松软路在上行驶，降低轮胎气压可以使()，从而提高其通过性

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问题单项选择题

汽车在松软路在上行驶，降低轮胎气压可以使()，从而提高其通过性能。

A.附着系数增加

B.滚动阻力减少，附着系数增加

C.滚动阻力增大，附着系数减少

D.滚动阻力减少

答案

参考答案：B

补全对话，情景问答

补全对话。

A: Good morning!

B: 1. ______ 2. ______!

A: Can you tell me your name?

B: Yes. 3. ______ 4. ______ is David. Are you Tim?

A: Yes, I am. 5. ______ 6. ______, David. Can you 7. ______ your name?

B: Yes. D-A-V-I-D, David.

A: Excuse me. What's this 8. ______ English?

B: It's an eraser.

A: Thank you.

B: You are welcome.

1.______ 2.______ 3.______ 4.______

5.______ 6.______ 7.______ 8.______

选择题

The Old Town of Lijiang is ________ with tourists for its beautiful old buildings. [ ]

A. popular

B. famous

C. special

D. different