题目内容

His parents will _____________ to breathe fresh air.

A. go on holiday
B. go on a holiday
C. go to holiday
D. go to a holiday

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The president's response was to __________ a week.

A. go on holiday
B. go on holiday for
C. go on a holiday for
D. go on holidays for

At one time, we planned to row a boat __________ at Simuki reservoir.

A. go a holiday
B. on holidays
C. to go holidays
D. on a holiday

晒太阳取暖利用了( );人造卫星的光电池板利用了( );植物的生长利用了( )。

A. 光电效应
B. 光化学效应
C. 光热效应
D. 感光效应

光纤通信中,与出射光纤耦合的光电元件应选用( )。

A. 光敏电阻
B. PAD
C. APD光敏二极管
D. 光敏晶体管