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【单选题】
关于对AsyncTask类的使用，下面说法错误的是（ ）A.
AsyncTask 类是抽象类，必须通过其子类构造对象
B.
AsyncTask的实例必须在UI线创建
C.
excute （）方法必须在 UI 线调用
D.
必须手动调用onPreExecute（）
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举一反三
【单选题】Which of the following is NOT true about the man?
A.
The next thing he would do is to go to the reserve room.
B.
He came to the library to borrow a book on physiology.
C.
He could only read the book in the reserve room.
D.
At first, he didn't know the meaning of 'on reserve'.
【多选题】Medical geneticists study DNA and genes for many purposes, including ().
A.
to learn how organisms cause illness
B.
to understand the gene changes that lead to birth defects or genetic illnesses
C.
to change gene structure and thus prevent or cure genetic diseases
D.
to improve the chances of success in organ transplants.
【简答题】The man is the next room. He brought our textbooks yesterday.
【单选题】选择填空。 — How many bookcases ______ there in your study? — There ______ one. [ ]
A.
are, is
B.
is, are
C.
is, is
D.
are, are
【简答题】A．The doctor is not available until late the next morning. B．If the man wants the best doctor he Should try Dr. Noon. C．If the man wants a suitable doctor he should wait until 12 o'clock. D．The doctor...
【单选题】听力原文：(A) The man is standing up next to the lady. (B) The children are looking at their parents. (C) The younger girl is picking flowers. (D) The little boy is waving his hand.
A.
B.
C.
D.
【单选题】The purpose of the study described in paragraph 2 was to determine
A.
how many hours people can survive without sleep
B.
how people react when their sleep is interrupted
C.
the changes in brain activity that occur during sleep
D.
the effects of sleep deprivation on brain activity
【单选题】推动经济持续健康发展，必须加快转变经济发展方式。转变经济发展方式的主攻方向是( )
A.
发展战略新兴产业
B.
科学发展
C.
调整经济结构
D.
走中国特色新型工业化道路
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