Reading lv4: Natural resources

Many people still believe that we will never__________ natural resources.

• rise

• reduce

• run out of

• raise

According to the writer, we should use energy resources ______.

• regularly

• economically

• naturally

• less

The phrase "approve of" in the passage is closest in meaning to ________

• explain

• disagree

• improve

• agree

What causes cancer and may badly affect the future generations?

• Coal

• Radioactivity

• Electricity

According to the passage, which of the following is NOT true about nuclear power?

• safe

• risky

• dangerous

• unsafe