问题
选择题
John couldn’t finish his words ______ something had struck his throat.
A．though
B．as though
C．when
D．since
答案
答案：B
as though“仿佛……一样；好像……似的”，其他选项不符合句意。
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John couldn’t finish his words ______ something had struck his throat.
A．though
B．as though
C．when
D．since
答案：B
as though“仿佛……一样；好像……似的”，其他选项不符合句意。
sin100πt （V）的 正弦交流电源，图中电流表内阻不计．副线圈接入“110V，60W”灯泡一只，且灯光正常发光．下列说法正确的是（ ）
/22 A