These light bulbs look the same，but their ______ on the environment are different．（ ）
| A． |
solutions |
B． |
methods |
C． |
effects |
D． |
secrets |
相关试题
After months of looking he_______ found a job． That made him quite happy．（ ）
A．hardlyB．quicklyC．finallyD．sadly
I can't hear you． I_______ to an English speech．（ ）
A．am listeningB．was listening
C．listenD．listened
B．
D．
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