All his attention _____ on the computer game, he even didn’t notice his mother enter the room. A. has been fixed B. was fixing C. was fixed D. fixed
若=a，=b，a与b不共线,则∠AOB平分线上的向量为（ ） A. B. C. D.λ(),λ由确
.“孔子象征着什么？一种文化，一种精神，一种观念，还是一种财富？”在中国，如果有人用这样一个问题去问众人，那么，他得到的答案可能会千差
31．After I became the manager, few occasions could I find________I have the time to sit down and enjoy a quiet dinner with my wife. A．that B．which C．why D．When
读美国农业带分布示意图，回答下列问题。 （1）美国农业生产布局最主要的特征是 ，这种生产的好处主要有 ①
氢氟酸（HF）对玻璃有腐蚀作用，可用在玻璃上雕刻各种精美图案，也可用在玻璃仪器上标注刻度及文字。氢氟酸与玻璃发生的反应可以表示为：SiO2+4HF=
Harry Potter is an _______ book for children, but my cousin isn’t ______ in it. A. interesting;interesting B. interested; interested C. interesting; interested D. i
的相反数是（ ）
B．
C．
