下列哪些情况，不得颁予导游证（）。
A.患有传染性疾病
B.受过刑事处分
C.曾被吊销导游证
D.无民事行为能力
参考答案：A, B, C, D
看下面的四季图完成句子。
winter spring summer fall
1. In winter, it's __________ and snowy. Many trees don't have any __________.
2. In spring, the weather is __________. Trees have new leaves.
3. In summer, it's very __________. Trees have cool, green leaves.
4. In fall, the trees lose their __________. What colour are fall leaves? Yellow, orange and red.
空载高压长线路的末端电压（）线路始端电压。
A、低于
B、等于
C、高于
