我国最长的河流是[ ] A.黄河 B.珠江 C.长江 D.黑龙江

题型:选择题

问题:

我国最长的河流是[ ]

A.黄河

B.珠江

C.长江

D.黑龙江

考点:长江
题型:选择题

一物体做竖直上抛运动(不计空气阻力),初速度为40m/s,当它的位移为35m时经历的时间为(g=10m/s2)(  )

A.1s

B.2s

C.5s

D.7s

题型:选择题

阅读理解。

     The English, as a race, are very different in many ways from all other nationalities, including their closest

neighbors, the French and the Belgians. It is claimed that living on an island separated from the rest of the

Europe has much to do with it. Whatever the reasons are, it may be fairly stated that the Englishman has

developed many attitudes and habits which distinguish him from other nationalities.

     Broadly speaking, an Englishman is a quiet, shy, reserved person who is fully relaxed only among people

he knows well. In the presence of strangers or foreigners he often seems restrained, even embarrassed. You

have only to witness a city train any morning or evening to see the truth of this. Serious looking men and

women sit reading their newspapers of having a light sleep in a corner, no one speaks. In fact, to do so would

seem most unusual. An Englishman, pretending to be giving advice to overseas visitors, once suggested, "On

entering a railway carriage, shake hands with all the passengers." Needless to say, he was not being serious.

There is an unwritten but clearly understood code of behavior which, if broken, makes the person immediately

suspected.

     In many parts of the world it is quite normal to show openly extremes of enthusiasm, emotion, excitement,

etc., often accompanied by appropriate gestures. The Englishman is somewhat different. Of course, an

Englishman feels no less deeply than any one of a different nationality, but he tends to display his feelings far

less. This is reflected in his use of language. Imagine a man commenting on the great beauty of a young girl.

Whereas a more emotional man might describe her as "an excellent jewel", "extremely beautiful", and "precious",

the Englishman will flatly state "Oh, she's all right." An Englishman who has seen a highly successful and

enjoyable film recommends it to a friend by commenting, "It's not bad you know." or on seeing very unusual

scenery he might convey his pleasure by saying. "Nice, yes, very nice." The overseas visitor must not be

disappointed by this apparent lack of interest and involvement. Instead, he must realize that "all right", "not bad",

and"nice", very often have the sense of "first-class", "excellent", and "beautiful". This use of language of a

unique style, particularly common in England is known as restrained statement.

1. From the passage people can infer that the English are different from other nationalities mainly in _____. [ ]

A. attitudes

B. characters

C. habits

D. all the above

2. If one doesn't want to be suspected in pubic, he had better _____. [ ]

A. follow the English code of behavior

B. shake hands with all the people he meets

C. talk with others

D. keep quiet

3. The underlined word "restrained" in paragraph 2 most probably means _____.[ ]

A. friendly and kind

B. polite and graceful

C. afraid and frightened

D. calm and controlled

4. According to the passage, the Englishman _____. [ ]

A. has less feelings than other nationalities

B. has emotions as deep as any other nationalities

C. is liable to express emotion by means of language

D. likes to have a joke with foreign visitors

5. An Englishman's saying "all right" usually expresses the meaning of "_____". [ ]

A. not bad

B. quite right

C. not good

D. very good

题型:选择题

下列疾病中,属于牙源性良性肿瘤的有()

A.骨肉瘤

B.牙骨质-骨化纤维瘤

C.颌骨中心性血管瘤

D.成釉细胞瘤

题型:选择题

关于仰卧位低血压综合征,下列说法错误的是()。

A.产妇采用右侧倾斜30°或垫高左髋部即可缓解

B.进行硬膜外操作前,应常规开放上肢静脉进行预防性输液扩容

C.血压低至80mmHg时,会使胎盘灌注减少,危及胎儿

D.在麻醉特别是交感神经阻滞后更易发生

E.是由于妊娠增大的子宫压迫了主动脉及腔静脉所致

题型:选择题

中国如何反对美国以不承认为手段对新中国施加压力?

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