单项选择题


Questions 23 to 25 are based on the conversation you have just heard.

A．How much its accuracy has improved recently.
B．How reliable long-range forecasts are.
C．How difficult it takes to make a good forecast.
D．How the current forecast causes troubles.
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单项选择题
Which of the following is true within an atom according to the passage
A．The charges of protons equal the charges of electrons.
B．The charges of neutrons equal the sum of the charges of electrons and protons.
C．The charges of protons equal the sum of the charges of electrons and neutrons.
D．The charges of electrons equal the sum of the charges of protons and neutrons.
单项选择题
What does the last sentence in Paragraph 2 mean
A．It means patients often cried and asked if there was a doctor in the house.
B．It means now people will receive help even though there is no doctors on the spot.
C．It means patients are now still asking if there is a doctor in the house.
D．It means in the past people can often find a doctor near their house.
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