第一节 完形填空 (共10小题；每小题2分，满分20分)
阅读下面短文，掌握其大意，然后从21—30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
A soldier, who was finally coming home after having fought in Vietnam, 21 his parents from San Francisco, telling them that he wanted to ask a friend to come and live with their family. The son said, “He was hurt 22 in the fighting. He stepped on a landmine and lost an arm and a leg. He has nowhere else to go, and I… I want him to live with us.” His parents 23 , explaining that someone with such a handicap（残疾）would be a heavy 24 on them.
At that point, the son hung up the phone. A few days later, the parents 25 a call from the San Francisco police. Their son had died after falling from a building. The police believed it was suicide (自杀).
