【单选题】【消耗次数：1】
7. They hope to_________the source of the infection.
①
track down
②
look down
③
look at
④
back down
参考答案：
复制
纠错
相关题目
【简答题】
Direction: Fill in the blanks with thephrases given below. Change the form if necessary.[ought to; look forward to; in wonder; give way to; look down; on the way to; reach out; put one’s arm around; trip over; cut into]7. Once,[填空1]a movie, she was knocked down by a running bicycle.
【简答题】
Direction: Fill in the blanks with thephrases given below. Change the form if necessary.[ought to; look forward to; in wonder; give way to; look down; on the way to; reach out; put one’s arm around; trip over; cut into]1. My dear, do not[填空1]such gloomy thoughts. Let us hope for better things.
【单选题】
Can you turn down the radio, please?
①
Oh, I know
②
I’m sorry, I didn’t realize it was that loud
③
I’ll keep it down next time
④
Please forgive me
【填空题】
Direction: Fill in the blanks with thephrases given below. Change the form if necessary.[ought to; look forward to; in wonder; give way to; look down; on the way to; reach out; put one’s arm around; trip over; cut into]4. If you dont lace up your shoes, youll[填空1].
【简答题】
Direction: Fill in the blanks with thephrases given below. Change the form if necessary.[ought to; look forward to; in wonder; give way to; look down; on the way to; reach out; put one’s arm around; trip over; cut into]6. We[填空1]hearing from you soon.
【简答题】
Direction: Fill in the blanks with thephrases given below. Change the form if necessary.[ought to; look forward to; in wonder; give way to; look down; on the way to; reach out; put one’s arm around; trip over; cut into]2. When they saw the horse, all stood still[填空1].
随机题目
【单选题】
生态旅游资源开发条件评价要素包括（???? ）①游览价值②市场距离③交通位置及其通达性④地区接待能力⑤旅游环境承载量
①
①②③④⑤
②
①②③④
③
①②③⑤
④
①②④⑤