第一节单项选择(共15小题;每小题1分,满分15分)请认真阅读下面各题,从题中所给的A、B、C、D、四个选项中,选出最佳选项,并在答题卡上将该项涂黑。例: It is generally considered unwise to give a child ________ he or she wants.A. however B. whatever C. whichever D. whenever
That was the first impression she ___ us when she first gave us an English lesson.
At the railway station, the mother waved goodbye to her daughter until the train was ___.
We were ___ to leave our homes because of the flood.
Health problems are closely connected with bad eating habits and a ___ of exercise.
Although this phenomenon can’t be understood, it can be ___ in fact.