单项选择 适中0.65 引用0 组卷108
Large aircraft like C919 must meet ________ safety standards before being delivered to airlines.
| A．serious | B．strict | C．loyal | D．lasting |
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A new travelling style “Special Forces Tourism” becomes popular among young people. It is ________ for them to travel to many places during short holidays.
| A．equal | B．lasting | C．exciting | D．traditional |
The people in the two countries look forward to a ________ peace. They don’t want wars any more.
| A．energetic | B．lasting | C．successful |
Some wild animals that were once ________ are now becoming rare.
| A．ancient | B．common | C．lasting | D．dangerous |
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