在显微镜下几乎看不到的结构是[ ]
A.细胞壁
B.细胞膜
C.细胞质
D.细胞核
B
Your blunt treatment of disputes would put other people in a negative frame of________, with the result that they would not be able to accept your proposal.
A.mind
B.idea
C.intention
D.wish
美洲斑潜叶蝇幼虫是()。
A.蛴螬
B.金针虫
C.蛆
D.白土蚕