题目内容
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No one knows where he came from. There is something ______ (mystery)about his family background．
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更多“No one knows where he came from. There is something ______ （mystery)about his family background．”相关的问题
A.where
B.what
C.which
D.that
A.Suspicious
B.Common
C.Conservative
D.familiar
A.No one knows exactly where they were.
B.No one knows for sure when they came into being.
C.No one knows for what purpose they were.
D.No one knows what they will.
The underlined word "clue" may probably mean______.
A．a postman that knows where to send the letter
B．an officer that knows the one who sent the letter
C．some stamps that are left in the envelope
D．some information that helps to find the receiver of the letter
The article suggests that______.
A．our earth exists before the sun
B．how space is formed
C．no one knows where the earth comes from
D．our earth used to be a high mountain on the sun
The article suggests that ________.
[A] our earth exists before the sun
[B] how space formed
[C] no one knows where the earth comes from
[D] our earth used to be a high mountain on the sun
A、older people will pay higher prices and purchase less of this product.
B、older people will pay higher prices and purchase more of this product.
C、older people will pay lower prices and purchase more of this product.
D、everyone pays the same price but old people consume more.
If you make a five-day trip across the Atlantic Ocean, your ship enters a different time zone every day. As you enter each zone, the time changes one hour. Traveling west, you set clock back; traveling east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours.
If you travel by ship across the Pacific, you cross the International Date Line. By agreement, this is the point where a new day begins. When you cross the line, you change your calendar one full day, backward or forward. Traveling east, today becomes yesterday; traveling west, it is tomorrow.
Strange things happen to time when you travel because______.
A．no day really has twenty-four hours
B．the earth is divided into time zones
C．time zones are not all the same size
D．no one knows where time zones begin
The Chinese have used a method called acupuncture (针灸) to perform. operations for about 4,000 years without putting the patient to sleep. This involves placing flexible needles into certain parts of the body. The needles are available in a number of stores in China and anyone may buy them.
To learn how to use the needles takes about one month of training. But to be skillful requires greater time. The person who performs the acupuncture knows how to put in the needles so the needles themselves are not painful. This person also knows where to place the needles so the patient feels no pain in the area where the operation is to be performed. A particular operation might require 25 or more needles placed in various parts of the body. But now this operation requires only 3 or 4 needles.
Today, the Chinese doctors are trying to learn more about acupuncture. They are trying to develop a convincing theory to explain how the needles work in preventing pain, or why a needle in the wrist, for example, would prevent the pain in the area of the mouth.
A patient who needs an operation is given a choice between having acupuncture or having one of the chemicals used for putting him to sleep. It has been estimated that over half of the patients choose acupuncture because there is no sickness after the operation and because the chemical may make the patient sick for a few hours or a day.
Acupuncture is ______.
A．a medical operation
B．a medical needle
C．a medical technique
D．a medical machine
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