Thousands of teachers ________ into their new flats and the rest of them ________ for theirs. The government say many more apartment buildings________

A．have moved; is waiting; are to be built

B．have been moved; are waiting; will be completed

C．have been moved; is waiting; will have been putting up

D．have moved; are waiting; are to be set up

分离培养副流感病毒最敏感的细胞是（）。

A.原代犬肾细胞

B.Hela细胞

C.KB细胞

D.A549细胞

E.原代人胚肾细胞