⑴____ A. vacation B. exam C. David D. favorite
⑵____ A. most B. post C. host D. cost
⑶____ A. seem B. feel C. coffee D. between
⑷____ A. however B. blow C. brown D. now
⑸____ A. clearly B. hear C. learn D. near
当OP=1000 mm时，电压表的示数如图乙，请在表格空格处填上此时的U值。
下列各物质属于电解质的是（ ）
①NaOH②BaSO4③Cu④蔗糖⑤CO2．
________ Gian ________ Tara are studying Chinese history now. They find it rich and amazing.
影响国际产业转移的主要因素有( )①劳动力因素 ②国际援助 ③内部交易成本(如投资环境) ④市场
