生长在含盐量高、干旱土壤中的盐生植物，通过在液泡中贮有大量的Na⁺而促进细胞吸收水分，该现象说明液泡内Na⁺参与 (     )

长L=0.5m的轻杆，其一端连接着一个物体A，A的质量m=2kg．现让A在竖直平面内绕O点做圆周运动，如图所示．（g=10m/s²）

① Why not go on Tuesday? It's half price then ____     A. They are Amy's.

② What does your father do? ____     B. I can sing English songs.

③ Are you all right? ____     C. I'd like some tea.

④ How can I get there? ____     D. He is a worker.

⑤ Whose pants are these?____     E. I am l.65 metres.

⑥ How tall are you? ____     F. You can get there by bus.

⑦What can you do? ____     G. Really? Thank you.

⑧ What's the weather like in the USA? ____     H. I feel happy.

⑨ What would you like to drink? ____     I. I'm OK now.

⑩ How do you feel?____       J. It's sunny and hot.

下列各句中，加线的成语使用有误的一句是（    ）