单项选择题

A．To determine whether the Earth’’s temperature is going up.
B．To study the behavior of some sea animals.
C．To measure the depths of the ocean.
D．To measure the movement of waves on the ocean.
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单项选择题
A．Childhood in his native home, Texas.B．Working as congressional secretary in Washington.C．Vacationing at his ranch in Texas.D．Presidency in the White House.
A．Childhood in his native home, Texas.
B．Working as congressional secretary in Washington.
C．Vacationing at his ranch in Texas.
D．Presidency in the White House.
单项选择题
Jewish and Italian Americans usually think a raised voice means a beginning of a fight.
A．Y
B．N
C．NG
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