第一节：单项填空（共20小题，每小题1分，满分20分）
1．Environmental groups intend to _______ the pressure until the government changes the law.
A．keep up B．make up C．pick up D．bring up
2．She did not allow her failure in the exam to discourage her. _______ she began to work twice as hard.
A．In addition B．On the whole C．In conclusion D．On the contrary
