皮皮学，免费搜题
登录
搜题
【单选题】
单选题-以下在补体激活效应的放大作用中起重要作用的是A.
C3
B.
C2
C.
C1
D.
C5
E.
C4
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Sales reached a peak in the middle of the quarter in 1990 before decreasing slightly, whereas in 2000 sales fluctuated throughout the quarter.
【单选题】—Can you tell me _______? —She is in the computer lab. [ ]
A.
where Linda was
B.
where is Linda
C.
where was Linda
D.
where Linda is
【简答题】有价值的(汉译英)
【单选题】After ______appeared to be an endless waiting, it was her turn to be examined.
A.
that
B.
where
C.
which
D.
what