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【单选题】
多数细菌生长最适 pH 是( )A.
6.5 — 7.5
B.
7.5 — 8.0 ，
C.
3—6
D.
8—10
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举一反三
【简答题】某公司对其全部产品使用同一个品牌,这种品牌策略是 ( ) 。
【单选题】From the first paragraph, we can deduce that ______.
A.
highly intelligent and strong, elephants are the largest land animals
B.
elephants are among the longest-lived, with life spans of 60 years or less
C.
healthy, full-grown elephants have natural enemies rather than humans
D.
human beings bring great harm to the elephants
【单选题】Passage Four Have you ever heard of a flower whose seeds are carried and spread by elephants? The rafflesia, a rare blossom, is very unusual. Found in the rain forests of Sumatra, the rafflesia is the...
A.
provide food for the giant flower
B.
water the rafflesia with their trunks
C.
carry rafflesia seeds from one place to another
D.
stomp out the awful smelling petals
【单选题】According to the passage, what is special about the expert's way of climbing onto an elephant?
A.
It is the easiest for the passenger.
B.
It is so elegant and yet quite simple.
C.
It is the most comfortable for the elephant.
D.
It can be carried out with a special command.
【单选题】Conservationists may be miscalculating the numbers of the threatened animals such as elephants, say African and American researchers. The error occurs because of a flaw in the way they estimate animal...
A.
endangered
B.
frightened
C.
died
D.
angered
【单选题】下列叙述中哪条与磺胺类药物不符
A.
苯环上的氨基与磺酰胺基必需处在对位
B.
苯环被其他环取代则抑菌作用消失
C.
N1的一个氢被杂环取代时有较好的疗效
D.
为二氢叶酸还原酶的抑制剂
E.
抑菌作用与化合物的pKa有密切关系
【单选题】Most of the elephants you see are Indian elephants. But sometimes you see an African elephant. You can easily tell the two apart by looking at their ears. African elephants have ears at least twice as...
A.
They live to the south of the Sahara.
B.
They can be divided into two species.
C.
They are all larger than Indian elephants.
D.
They have bigger ears than the Indian elephants.
【单选题】水平干线子系统是从工作区的信息插座开始到管理间子系统的配线架,设计涉及到水平子系统的传输介质和部件集成,主要有以下几点:
A.
确定线路走向。
B.
确定线缆、槽、管的数量和类型。
C.
确定电缆的类型和长度。
D.
订购电缆和线槽。
E.
如果打吊杆走线槽,则需要用多少根吊杆。
F.
如果不用吊杆走线槽,则需要用多少根托架。
【单选题】Which of the following is true according to the conversation?
A.
Most Thai people have elephants.
B.
People usually go to the north to ride elephants.
C.
Thai elephants can live only in the north and northeast.
D.
People always ride elephants in the streets.
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