问题
选择题
—Did you arrive here this morning?
—Yes,it was at nine o’clock ____we came here.
A．when
B．before
C．which
D．that
答案
D
考查强调句型。本句是强调句型，被强调部分是at nine o’clock。
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—Did you arrive here this morning?
—Yes,it was at nine o’clock ____we came here.
A．when
B．before
C．which
D．that
D
考查强调句型。本句是强调句型，被强调部分是at nine o’clock。
，口内法进行下牙槽神经阻滞麻醉后患者很快出现暂时性牙关紧闭，这可能是因为（）