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问题 选择题

下列关于生态系统的叙述正确的是（　　）

A．生态系统的破坏是自然因素导致，而绝非人为因素所致

B．生态系统的破坏都可以通过自动调节能力得以恢复

C．生态系统的破坏只是暂时的

D．生态系统一旦破坏，可能引起严重后果

答案

答案：D

单项选择题 B1型题

四逆散主治（）

A.肝脾不和，气郁于内，脘腹诸痛

B.肝气郁结较重，胁肋疼痛，胸脘胀满，寒热往来

C.肝郁血虚，脾虚胃气不和，两胁作痛，神疲食少，脉弦而虚

D.肝肾阴虚，肝气不疏，胁痛，咽干口燥

E.胸胁苦满，心烦喜呕，口苦，咽干，目眩，脉弦
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单项选择题

The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.

In what year was Edward born ？（）
(1) In 1988, Edward turned 17 years old.
(2) Edward’s sister Lisa, who is 14 months older than Edward, was born in 1970.

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.
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