For the sentence *"I'm not sure which senators has the president spoken to", it is ill-formed because the auxiliary verb "has" is moved to the "C" position of CP which is occupied by the covert complementizer "that".
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For the sentence "The boy saw the man with a telescope.", it is not ambiguous because the PP "with a telescope" can only be used to modify "the man" .
A. 对
B. 错
目视光学仪器视放大率的定义:
A. 通过仪器观察目标的视角与用人眼观察目标的视角之比
B. 通过人眼观察目标的视角与用仪器观察目标的视角之比
C. 通过仪器观察目标的视角的正切与用人眼观察目标的视角的正切之比
D. 通过人眼观察目标的视角的正切与用仪器观察目标的视角的正切之比
一般对目视光学仪器的要求有:
A. 视放大率大于1
B. 成实像
C. 对正常眼,出射会聚光束
D. 成虚像
关于放大镜,下列说法正确的是:
A. 物体与透镜的物方焦平面重合,入射的是平行光束
B. 物体与透镜的像方焦平面重合,出射的是平行光束
C. 焦距越长,视放大率越大
D. 焦距越短,视放大率越大
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