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【单选题】
According to paragraph 6, how did peregrine falcons and bald eagles became endangered?A.
Predatory birds began eating the eggs of falcons and eagles.
B.
The use of DDT reduced the amount of food available in the falcon and eagle habitat.
C.
Falcons and eagles could no longer find materials to build their nests when the use of DDT was discontinued.
D.
Falcons and eagles that had consumed food containing DDT laid eggs with defective shells.
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举一反三
【简答题】.专利法规定不授子专利权的项目包括()。 A、违反国家法律的发明创造 B.科学发现 C.动物新品种 D.食品制作方法
【单选题】听力原文：W: Hello, Gary. How're you? M: Fine! And yourself? W: Can't complain. Did you have time to look at my proposal? M: No, not really. Can we go over it now? W: Sure. I've been trying to come up with...
A.
The woman's proposal on their factory.
B.
Some new production and advertising strategies.
C.
Hiring a couple of engineers.
D.
Talking about personnel
【简答题】There were fine w______( 皱纹 ) around her eyes.
【多选题】溃疡性结肠炎的病变大多位于 B C D E 【答案】:E 【解析】:此题考查的是溃疡性结肠炎的病理改变。溃疡性结肠炎病变位于大肠,呈连续性弥漫性分布。多数在直肠乙状结肠、可扩展至降结肠、横结肠,也可累及全结肠。 【题型】 B1 共用备选答案
A.
空肠
B.
末段回肠
C.
回盲部
D.
全结肠
E.
直肠、乙状结肠
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