It’s generally believed that the_________ of the Dragon Boat Festival is to celebrate the great poet Qu Yuan.
| A．resource | B．ambition | C．origin | D．treasure |
语音知识（共5小题；每小题1分，满分5分）
从A、B、C、D四个选项中，找出划线部分与所给单词划线部分读音相同的选项。
1．solution
A. gun B. hunt C. equal D. typhoon
2. stomachs
A. character B. sandwich C. bench D. known
3. bow
A. flow B. fellow C. cow D. tomorrow
4. theory
A. diary B. pioneer C. therefore D. really
5. exchange
A. expression B. exist C. examine D. exercise
In the past month, cruel snowstorms hit some European countries and America , _________great transportation problems in these countries.
| A．causing | B．caused | C．to cause | D．having caused |
With Halloween approaching, there exists a real concern among parents and teachers __________ trick or treating will become a seriously anti-social activity.
| A．whether | B．what | C．that | D．how |
When first __________ to the market, the computer software was not a success due to its complexity in operation.
| A．introducing | B．being introduced |
| C．introduced | D．to be introduced |
Unfortunately, the element Madam Curie devoted all her life her death .
| A．to caused | B．causing | C．to be caused | D．to causing |