问题
单项选择题
声波容易探测到的缺陷的（）一般不小于波长的1/2。
A.尺寸
B.水平距离
C.深度
D.以上都不对
答案
参考答案：A
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声波容易探测到的缺陷的（）一般不小于波长的1/2。
A.尺寸
B.水平距离
C.深度
D.以上都不对
参考答案：A
| 阅读理解。 | ||||||||||||||||||
Jackson's Clothing Store
|
| 1. — Which is the cheapest (最便宜的) of all? — ______. |
[ ] |
| A. A skirt. B. A T-shirt. C. A white cap. D. Pants |
| 2. — How much are two skirts and three caps? — ______. |
[ ] |
| A. ￥88. B. ￥120. C. ￥188. D. ￥214 |
| 3. In the store you can buy (买到) ______. |
[ ] |
| A. black pants B. a blue skirt C. a green cap D. two white T-shirts |
| 4. You like red and you only have ￥52. You can take ______. |
[ ] |
| A. a skirt B. a pair of shoes C. a T-shirt D. two caps |
| 5. You only have 150 yuan. You can buy ______. |
[ ] |
| A. two T-shirts and a pair of shoes B. a skirt and a pair of pants C. a skirt and two pairs of shoes D. a T-shirt and two skirts |