9.Nowadays little knowledge __ to be a dangerous thing.

• A、seem

• B、seemed

• C、does seem

• D、do seem

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48. According to Paragraph 1,why does the author scratch his head?

• A、Because he doesn' t know what to do once schools are closed.

• B、Because he is not sure about the practicability of those new tests.

• C、Because he is concerned that many teachers will lose their jobs.

• D、Because he is not in favor of the government' s reform efforts.