28. How do some food critics avoid being seen taking notes?
(A) They go outside to take notes.
(B) They bring a recorder with them.
(C) They take notes under the tablecloth.
(D) They remember details but don’t write them down.
Passage C (Questions 29-32)
Do you do what you can to help the environment? One way to help is to participate in Earth Hour. This is a worldwide event that is held on the last Saturday of March every year. Households and businesses are asked to turn off any unnecessary lights and other electrical appliances for one hour on this day. The purpose is to raise awareness about the effects of climate change. Earth Hour was created by the World Wide Fund for Nature. It began in 2007 in Sydney. Over two million residents there turned off unneeded lights for one hour. The idea of Earth Hour has spread to many cities around the world. In 2010, 126 countries participated in the event. Search the next Earth Hour on the Internet. By joining in, you are doing your part to protect the earth.

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