问题
单项选择题
色素失禁症的遗传模式为（）
A.X连锁隐性遗传
B.X连锁显性遗传
C.常染色体显性遗传
D.常染色体隐性遗传
E.多基因遗传
答案
参考答案：B
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色素失禁症的遗传模式为（）
A.X连锁隐性遗传
B.X连锁显性遗传
C.常染色体显性遗传
D.常染色体隐性遗传
E.多基因遗传
参考答案：B
| 阅读理解。 | |
| |
| 1. Which shows New York P&H (PLUMBING & HEATING) has been in business for a long time? | |
| A. "Since 1968". B. "24 Hours 7 Days Service". C. "56568822". D. "268 Pine Street 5th Avenue". | |
| 2. For which of the following problems would one call New York P&H? | |
| A. Rainwater drops from the roof. B. A refrigerator stops working. C. The floor of the bathroom is covered with water. D. There's something wrong with the furniture. | |
| 3. What will the person who needs help probably discuss with New York P&H? | |
| A. Duties. B. Tools. C. Meals. D. Costs. | |
| 4. If something is wrong with your heating, ______. | |
| A. you can ask them for help at once B. New York P&H has known it clearly C. P&H will just help you by telephone D. you can ask for free fixing in 24 hours | |
| 5. Which of the following is NOT clear in the reading? | |
| A. Where P&H is. B. How big P&H is. C. What P&H does. D. When P&H was set up. |