______the Internet is of great help, I don’t think it’s a food idea to spend too much time on it.
A．IfB．WhileC．BecauseD．As
B

試題分析：考查連詞：A. If如果，B. While雖然，C. Because因?yàn)镈. As由于，正如，句意;雖然因特網(wǎng)很有用，但我認(rèn)為花太多時(shí)間在上面不是好主意。選B。
點(diǎn)評(píng)：：連詞詞的用法主要是考查平時(shí)的記憶，要注意辨別不同的連詞的含義，做題時(shí)要根據(jù)上下文的邏輯關(guān)系做題。
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