It has been announced that all the students ______ put on the masks before going to school in case they are infected with SARS virus.
| A．shall | B．will | C．need | D．may |
224. TV home shopping(电视直销) has changed the way of shopping and the ____ of people’s family life in some way.
| A．meaning | B．structure | C．pattern | D．Tense |
223. Lu Xun once said that the _____ are made by people. That’s so-called “Where there is a will, there is a way”.
| A．paths | B．ways | C．tracks | D．Roads |
222. In Paris nowadays, we may see musicians performing in the streets to ______.
| A．audiences | B．visitors | C．travelers | D．Passersby |
221. There are 5 ________ in the passage about nanometer(纳米) technology we have just read. Please tell me the general meaning of the first one.
| A．persons | B．paragraphs | C．articles | D．Units |
220. Mr. Wang was reading ______ on how to learn a foreign language when someone came to see him.
| A．paper | B．a piece of paper | C．a paper | D．a sheet of paper |