Part I: Choose the correct definitions for each English word. (10*2'=20'）1. nosedive ________ a. fear2. abandon _________ b. a situation where something suddenly becomes worse 3. decline _________ c. a continuous decrease of something4. indulgence _______ d. to leave sb. with no intention of returning5. lest _____________ e. the state or act of having or doing whatever you want6. wretched _________ f. in order to prevent something from happening7. confute ___________ g. to prove a person or an argument to be wrong8. apt ______________ h. very bad or of very poor quality9. endeavor _________ i. an attempt to do something especially something new or difficult10. dread ___________ j. likely or having a natural tendency to do something