对
分子结构的下列叙述中,正确的是( )
| A.6个碳原子有可能都在同一直线上 |
| B.在同一直线上的原子至少有5个 |
| C.在同一平面上的原子至少有8个 |
| D.分子中呈四面体结构的碳原子有3个 |
If you leave the club, you will not be_____back in .
| A.received | B.admitted | C.turned | D.moved |
What I need is_____ book that contains ______ABC of oil painting.
| A.a; 不填 | B.the; 不填 | C.the; an | D.a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A.as a result of | B.on top of | C.in front of | D.in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A.other | B.others | C.one | D.ones ks |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A.continued | B.immediate | C.careful | D.general |