婴儿出生后4～6个月，反复呼吸道感染，你首要考虑哪类Ig不足（）
A.IgG
B.IgM
C.血清型IgA
D.分泌型IgA
E.IgE
参考答案：D
The company had about 20 notebook computers but only one third _________ used regularly.
Now we have sixty working all day long.
A．is
B．are
C．was
D．were
Under the Contract Act, 1872, define and state the consequences of:
(b) ‘coercion’; (3 marks)
