夏天，人站在电扇下感到凉爽，这是因为电风扇加快了　____ 　缘故；若将一干燥的温度计放在电扇下吹，则温度计的示数将　____ （填“增大”“不变”或“减小”）

关于力的概念，下列说法中错误的是 （     ）

    Sally is a good girl. She never ____  up late. Her mother wakes her up（唤醒）at 6:00 a.m. From a quarter ____  six, she begins to do sports. The she comes back and has ____  at six forty. After that, she goes to school. Sometimes she ____ her bike.
At school, Sally has seven classes on ____ . Sally is good at（擅长）English. She san speak English very well. After school she often plays ____  games with her ____ . Then she goes home by bus. She gets home before 6:00 p.m.. After
____  she begins to do her ____ . Then she ____  TV for a while, she always goes to bed before half past ten.

下列各句中，加线的成语使用恰当的一项是          （    ）