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【单选题】
下列有关有机化合物的性质或结构或用途的说法正确的是A.
蛋白质和油脂都属于高分子化合物，一定条件下水解
B.
乙烯、聚氯乙烯结构中都含有碳碳双键
C.
乙醇既可以作燃料，也可以在日常生活中使用，如无水乙醇经常用于医疗上杀菌、消毒。
D.
蛋白质溶液中分别加入饱和(NH 4 ) 2 SO 4 和CuSO 4 溶液，均有沉淀，原理不相同
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【单选题】47
A.
This mountain rises l,532 feetmaking it the highest mountain on the Atlantic seaboard.
B.
It is split almost inhalf by Somes Sound, a deep and narrow stretch of water, seven miles long.
C.
The wealthy residents of Mt. Deserts Island selfishly kept itto themselves.
D.
Mt. Desert island is one of the most famous ofall the islands left behind by the glacier.
E.
The term comes from theactivity of the ice age.
F.
It also lies in a major bird migration lane and is a resting spot for manybirds
【单选题】Morning clouds lifting out of the Longwood valley______obscure the highest mountain in the region.
A.
part
B.
partial
C.
partially
D.
partiality
【简答题】Mount Everest is the highest mountain in the world. It is in the Himalayan Mountains between Nepal and China, and it is 8 900 meters high. Sir Edmund Hillary from New Zealand and Tenzing Norgay from N...
【单选题】48
A.
This mountain rises l,532 feetmaking it the highest mountain on the Atlantic seaboard.
B.
It is split almost inhalf by Somes Sound, a deep and narrow stretch of water, seven miles long.
C.
The wealthy residents of Mt. Deserts Island selfishly kept itto themselves.
D.
Mt. Desert island is one of the most famous ofall the islands left behind by the glacier.
E.
The term comes from theactivity of the ice age.
F.
It also lies in a major bird migration lane and is a resting spot for manybirds
【单选题】What is the highest mountain in Britain?
A.
Scafell
B.
Ben Nevis
C.
the Cotsworlds
D.
the Forth
【单选题】Which among the following is the highest mountain in Britain?
A.
Ben Nevis.
B.
The Alps.
C.
The Rocky Mountains.
D.
Scafell Pike.
【单选题】50
A.
This mountain rises l,532 feetmaking it the highest mountain on the Atlantic seaboard.
B.
It is split almost inhalf by Somes Sound, a deep and narrow stretch of water, seven miles long.
C.
The wealthy residents of Mt. Deserts Island selfishly kept itto themselves.
D.
Mt. Desert island is one of the most famous ofall the islands left behind by the glacier.
E.
The term comes from theactivity of the ice age.
F.
It also lies in a major bird migration lane and is a resting spot for manybirds
【单选题】People choose to build Astronomy on Manna Kea because it's the highest mountain among the world's islands.
A.
Y
B.
N
C.
NG
相关题目：
【单选题】What is the highest mountain in Britain?
A.
Scafell
B.
Ben Nevis
C.
the Cotsworlds
D.
the Forth
参考解析：
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