问题
选择题
下列说法正确的是 [ ]
A．化学键存在于原子之间，也存在于分子之间
B．任何分子中都存在化学键
C．在化合物CaCl2中，两个氯离子之间也存在离子键
D．离子化合物中可能存在共价键
答案
答案：D
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下列说法正确的是 [ ]
A．化学键存在于原子之间，也存在于分子之间
B．任何分子中都存在化学键
C．在化合物CaCl2中，两个氯离子之间也存在离子键
D．离子化合物中可能存在共价键
答案：D
| 阅读理解 | ||||||||||||||||||
Mason's Clothing Store
| ||||||||||||||||||
| 1. —Which is the most expensive(昂贵的)of all? —________ | ||||||||||||||||||
| A. Shoes. B. T-shirt. C. Pants. D. cap. | ||||||||||||||||||
| 2. —How much are two skirts and a T-shirt? —_______ | ||||||||||||||||||
| A. $20. B. $21. C. $22. D. $23. | ||||||||||||||||||
| 3. You can buy _______ in Mason's Clothing Store. | ||||||||||||||||||
| A. black pants B. a blue skirt C. a green cap D. a yellow T-shirt | ||||||||||||||||||
| 4. You like black and you only have $8. You can take_______. | ||||||||||||||||||
| A. a skirt B. a T-shirt C. a cap D. a pair of shoes | ||||||||||||||||||
| 5. You only have sixteen dollars. You can buy _______. | ||||||||||||||||||
| A. a skirt and a pair of pants B. two T-shirts and a pair of shoes C. a skirt and two pairs of shoes D. a cap and a pair of pants |