第二部分：词汇知识运用（共两节，满分40分）
第一节：多项选择（共10小题；每小题1分，满分10分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
21.However, meeting the challenge of is not all that simple，especially to those who are addicted to sweets and snacks.
A. possession B. symptom C. obesity D. prejudice
22. Keep his remarks to the and let other people have chances to present their views, which has been stressed by the president for many times.
A. minimum B. appendix C. commitment D. evaluation
23. The Iranian government is accused of ______ some terror organizations in the Middle East by the United States, which can’t not produce firm evidence to prove it．
A．appointing B．sponsoring C．consuming D．supplying
24. The Jade Rabbit is also ______ with special heater units, allowing it to function during the cold lunar nights when temperatures drop as low as -180°C (-292°F).
