听力原文: The time is four o'clock.
There has been a serious accident on the M6 motorway in Lancashire, in which at least six people have lost their lives. It happened early this morning near Preston when a coach carrying 45 passengers collided with a heavy lorry. Rescue operations have been going on throughout the day, and a section of the motorway has been closed to traffic.
Important talks have been taking place at 10 Downing Street today between leaders. The Prime Minister and Trade Union leaders have agreed to work together to find ways of combating level of unemployment in British industry.
Meanwhile, the Government has failed to avert a national bus strike, and the bus drivers' union has announced that no buses will run from text Monday. The decision to go ahead with strike was announced by a union spokesman at the end of a meeting earlier this afternoon during which Government representatives failed to persuade the union and the employers to agree on a new wage plan.
(23)
A.Two.
B.Three.
C.Four.
D.Five.
第2题
下列哪种显微镜多用于检查不染色的活细菌和螺旋体的形态及运动进行观察
A、普通光学显微镜
B、暗视野显微镜
C、相差显微镜
D、荧光显微镜
E、电子显微镜
第4题
下列显微镜主要用于未染色的活菌的检查的是
A、普通光学显微镜
B、暗视野显微镜
C、荧光显微镜
D、倒置显微镜
E、电子显微镜
第5题
主要用于未染色的活菌的检查是
A.普通光学显微镜
B.暗视野显微镜
C.相差显微镜
D.荧光显微镜
E.电子显微镜
第6题
适于观察无色透明活细胞微细结构的光学显微镜是()。
A相差显微镜
B、暗视野显微镜
C、普通光学显微镜
D、偏振光学显微镜
第7题
对不染色活细菌进行微细结构观察,常使用的显微镜是
A、暗视野显微镜
B、相差显微镜
C、普通光学显微镜
D、生物显微镜
E、电子显微镜
第8题
观察细菌菌毛必须使用()。
A、暗视野显微镜
B、普通光学显微镜
C、电子显微镜
D、相差显微镜
E、荧光显微镜
第9题
常用于观察活体细菌及其动力的显微镜是
A、双筒显微镜
B、相差显微镜
C、暗视野显微镜
D、偏光显微镜
E、荧光显微镜
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