听力原文:W: My headache is killing me. I thought it was going away. But now it is getting worse and worse. M: I told you yesterday to make an appointment. Q: What does the man mean? (16)
A.
The woman should confirm her appointment with the doctor.
【单选题】First of all, the celebrities, while receiving the handsome pay for advocating some products, should be responsible for what they have said in the ads for the ________ is priceless.
【单选题】In a rectifying filter circuit, which kind of the filter circuit will be used if the load current is small and a DC voltage with a very small ripple output voltage is required? Choose A,B or C.