1 . These measures would make valuable ______ (contribute) towards reducing industrial accidents. (所给词的适当形式填空)

2 . It is our duty to make ______ (contribute) to our motherland. (所给词的适当形式填空)

3 . To make our country stronger, everyone should make his/her ________ (contribute). （所给词的适当形式填空）

4 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

China successfully exploded its first atomic bomb on Oct 16,1964,     1    (shock) the rest of the world. It was followed by the successful    2    (explode) of a hydrogen (氢) bomb in 1967. Later, a satellite with a recording of the tune of Dong Fang Hong declared to the world that China    3    (master) satellite technology.

It was the bombs and the satellite    4     enabled China to take the lead in global scientific and technological development and improve the strength of the country's national defense, commented Xinhua News Agency.

Many people made    5    (contribute) to these world-shaking events. Yu Min, a famous nuclear physicist who passed    6     in January at the age of 93, was one of them.

Yu was one of the leading scientists who    7     (be) able to overcome difficulties in the design of the hydrogen bomb. Known as the "the father of China's hydrogen bomb", he was presented    8     the State Preeminent Science and Technology Award by President Xi Jinping in 2015. It is the nation's highest scientific honor.

    9    , Yu said the achievement belonged to the whole team.

“A man's name will disappear in time, but    10     will satisfy him is that he can contribute slightly to the nation's prosperity(繁荣)” Yu said, according to China Daily.