问题
单项选择题
多发性硬化是一种（）。
A.螺旋体感染病
B.脱髓鞘疾病
C.维生素B12缺乏病
D.脂类代谢病
E.神经系统变性病
答案
参考答案：B
解析：多发性硬化是一种青壮年时期缓慢进展的中枢神经系统白质脱髓鞘疾病，病因目前不明。
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多发性硬化是一种（）。
A.螺旋体感染病
B.脱髓鞘疾病
C.维生素B12缺乏病
D.脂类代谢病
E.神经系统变性病
参考答案：B
解析：多发性硬化是一种青壮年时期缓慢进展的中枢神经系统白质脱髓鞘疾病，病因目前不明。
| 阅读理解。 | |
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| 1. Which section can you get only on Wednesday? | |
[ ] | |
| A. The Arts B. The Sports C. The Dining In, Dining out D. The House & Home | |
| 2. Convenient home delivery can be ordered at a reduced price by _____. | |
[ ] | |
| A. going to the bookstore B. calling the salesman C. telephone only D. using the order card | |
| 3. The main idea of this advertisement is _____. | |
[ ] | |
| A. many opportunities will be provided just to those who order home delivery B. several new sections have been printed separately from now on C. readers can be well informed of the latest news and sports results D. people can pick up all the information they are interested in |