【C9】A．overhearB．bugC．monitorD．look

【C9】A．come acrossB．come into contact withC．look down uponD．watch over

【C9】A．looks downB．sees throughC．neglectsD．challenges

The process of identifying and correcting errors in a program．A．DebugB．BugC．FaultD．De

【C11】A．looking forB．looking intoC．looking afterD．looking over

【C9】A．got down toB．put up withC．gave rise toD．looked ahead to

番泻苷A中两个蒽酮母核的连接位置是（)A.C1—C1B.C2—C2C.C9—C9D.C10—C10E.C9—C10