题目内容
_______ they are twin brothers, they don’t look like each other.
| A．Though | B．Since | C．However | D．When |
A
解析试题分析：句意：尽管他们是双胞胎兄弟，但是他们彼此看起来不像。A. Though尽管，虽然；B. Since 自从；C. However然而；D. When当什么的时候； 结合语境故选A。
考点：连词的辨析
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