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问题 单项选择题

除查粪便外，华支睾吸虫的病原学诊断方法还有

A．呕吐物查成虫
B．肛门拭子法
C．间接血凝试验
D．酶联免疫吸附试验
E．十二指肠引流液法

答案

参考答案：E

解析：肝吸虫寄生在人的肝胆管可用十二指肠引流液法检查。

单项选择题 B1型题

牛黄的鉴别特征是（）

A.水波纹

B.齿轮纹

C.五影纹

D.合把

E.乌金衣
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单项选择题

Now that you’ve gotten a little more confident, we’re going to give you the opportunity to practice "without the training wheels." When you want to check your work, you can turn to the solutions at the end. If you aren’t familiar with some of the mathematical concepts, make a note to pay particular attention to that chapter in this book; this practice set covers a wide range of topics tested on the GMAT.
On all data sufficiency problems, the answer choices are the same (as you’ve learned). We’ve put them here for your reference.
Ａ. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Ｂ. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
Ｃ. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
Ｄ. EACH statement ALONE is sufficient.
Ｅ. Statements (1) and (2) TOGETHER are NOT sufficient.

If there are only red, blue, and green marbles in a jar, what is the ratio of red to blue marbles
(1) The ratio of red to green marbles is 2:3.
(2) The ratio of green to blue marbles is 6:5.
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