()属于高毒杀虫剂。
A.辛硫磷
B.氯氰菊酯
C.涕灭威
D.吡虫啉
参考答案:C
Kate didn’t go to the cinema last night because she had to ________ her sick dog.
A.look at
B.look like
C.look for
D.look after
上颌前牙的牙体长轴在近远中向的倾斜情况是()。
A.中切牙近中倾斜度最大,尖牙次之,侧切牙较正
B.中切牙较正,侧切牙近中倾斜度最大,尖牙次之
C.中切牙较正,尖牙近中倾斜度最大,侧切牙次之
D.中切牙近中倾斜度最大,侧切牙次之,尖牙较正
E.均较正