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【单选题】
听力原文：A: I'm really getting worried about Mary. She was sitting in for the exam in two weeks' time. But all she is talking about now is nothing but an upcoming concert. B: She may fail along that line. Let's try to talk some sense into her. What are the speakers probably going to do?A.
To persuade Mary to spend more time on her lessons.
B.
To help Mary to prepare for the upcoming concert.
C.
To talk with Mary about going to the concert.
D.
To ask Mary to stop worrying about the exam.
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【单选题】衡量电子计算机的性能时，除了用其运算速度、字长等主要指标以外，还用哪项来表示____。
A.
主存储器容量的大小
B.
外部设备的多少
C.
计算机的体积
D.
计算机的制造成本
【单选题】It can be concluded from the study that______.
A.
the bilingual speakers perform. worse than those who only know one language
B.
learning a language may have the risk of Alzheimer' s disease or smoking habits
C.
people have to speak a new language fluently in order to gain some benefits
D.
people can start to learn a new language later in life and still get the benefits
【简答题】急性毒性试验的经典动物是 _____。
【单选题】The following statements can be concluded from the study made by Charlotte EXCEPT that______.
A.
forgiving can make people calm down.
B.
when people recall a past hurt, they tend to be more irritated
C.
there is no link between forgiving and a heart disease
D.
when people recall a past hurt, they tend to have a higher blood pressure and heart rate
【单选题】The Harvard study has concluded that ______.
A.
children never benefit from ear surgery.
B.
tympanostomy tubes result in deafness.
C.
some surgeons are too eager to operate.
D.
ear tube operations are too expensive.
【简答题】一般而言，国际经济学可以分为和两个部分。
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