Which of the following is NOT true about extensive listening?
A. It helps to gain a general understanding of the listening materials.
B. It helps to improve your language fluency and build up your vocabulary.
C. It is the detailed and focused listening.
D. It can be extended for a long time over a variety of topics.
Which kind of materials is NOT suitable for extensive listening?
A. Materials appropriate to your level.
B. Authentic listening materials.
C. Materials on a topic that you are already familiar with.
D. Materials on a topic that you're interested in.
E. Difficult materials that are very challenging to you.
妊娠合并心脏病孕妇，分娩期防治心力衰竭的措施不包括
A. 给予氧气吸入
B. 第二产程配合手术助产
C. 胎儿娩出后腹部压沙袋
D. 产后3日内加强观察
E. 宫缩乏力时用麦角新碱
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