（10分）如图甲所示，质量为m＝1kg的物体置于倾角为θ＝37°的固定且足够长的斜面上，对物体施以平行于斜面向上的拉力F，t1＝1s时撤去拉力，物体运动
如图16所示，静止的传送带上有一木块正以0.2m/s在匀速下滑，当传送带突然向下以0.1m/s开动时，木块滑到底部所需时间t与传送带始终静止不动所需时间t0
With (很多东西要买) he went to the supermarket. (buy)
已知：如图AB⊥BC，BC⊥CD且∠1=∠2，求证：BE∥CF 证明：∵AB⊥BC，BC⊥CD（已知） ∴ = =90°（ ） ∵∠1=∠
仿照下面例句，补写两句，使之组成一段意思相关的文字。 能买到佳肴，不能买到胃口；能买到书籍，不能买到知识。 ________________________；_______________
下列加点词语的含义与现代汉语相同的一项是（ ） A．不以为言 B.鲍叔不以我为不肖 C．吾尝为鲍叔谋事而更
Never in my wildest dreams ______ these people are living in such poor conditions. A. I could imagine B. could I imagine C. I couldn’t imagine D. couldn’t I imagine
She was glad to see her child well __________. A. take care of B. taken care of C. taken care D. taking care of
