Don’t be afraid of asking for help ______ it is needed.

A. unless B. since C. although D. when

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You’d better _______ here _______ the heavy rain.

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There is a new park near Andy’s home. It’s fine today. Andy and his family are in the park now. On their left, there is a café. On their right, there is a big lake. There are many flowers and trees around the lake. There’s a small hill behind the lake. Near the lake, there are two signs(標(biāo)識). One says, “Don’t swim in the lake!” The other says, “No fishing!” But you can go boating on the lake. There is a beautiful garden in the middle of the park. There are beautiful flowers and green grass in it. There are some small shops between the lake and the garden. The park is so big and nice. Andy and his family like it very much.

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Since the 1970s, scientists have been searching for ways to connect our brain with computers. Brain-Computer Interface (BCI) technology could help people with disabilities send commands(指令)to machines.

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A. Switzerland, the BCI Research Center

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