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【单选题】
我国南方和北方的地理分界线是A.
秦岭淮河一线
B.
长江
C.
黄河
D.
太行山
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【简答题】如果关于x的方程x 2 +2（a+1）x+2a+1=0有一个小于1的正数根，那么实数a的取值范围是______．
【单选题】What is true about the IKEA effect?
A.
It refers to the phenomenon that people usually undervalue their creations.
B.
It is put forward by the honorable and successful manufacturer IKEA
C.
It explains why the participants think highly of their own origami.
D.
It accounts for the popularity of do-it-yourself among youngsters.
【单选题】Usually people under stress _____ express their full range of potential.
A.
care for
B.
tend to
C.
happen to
D.
lead to
【单选题】According to Aniruddh Patel, language is usually under consideration when ______.
A.
musicians explain the complex meaning behind the music
B.
therapists try to treat patients who suffer from stroke
C.
people research the connection between music and the brain
D.
researchers study the functions of different parts of the brain
【单选题】“Multi local people” usually refers to those people who are under the impact of different culture.
A.
T
B.
F
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