The study published in the journal Nature indicates that ______
A: the Clean Air Act has not produced the desired results
B: lead deposits in arctic snow are on the increase
C: lead will stay in soil and snow longer than expected
D: the US is the major source of lead pollution in arctic snow
A: the Clean Air Act has not produced the desired results
B: lead deposits in arctic snow are on the increase
C: lead will stay in soil and snow longer than expected
D: the US is the major source of lead pollution in arctic snow
举一反三
- Passage2: Questions 5 to 8 are based on the passages you have just heard. 5.: Snow can be very dangerous although it is beautiful.|Snow can cause thousands of deaths in the United States every year.|Snow can lead to many people’s heart attack in the United States.|Snow can make it more difficult to do physical activity in winter.
- Scarcely had he gone out ______ . A: that is started to snow B: than it started to snow C: when it started to snow D: and it started to snow
- I will stay at home if it ______ tomorrow. A: snows B: will snow C: is snowing D: would snow
- Which of the followings indicates abnomal P-wave() A: P-wave is upright in lead Ⅱ B: P-wave is biphasic in lead Ⅲ. C: P-wave is inverted in lead av D: P-wave is not obvious in lead avVL E: P-wave is inverted in lead V5.
- It cannot be based on any assumptions about human nature, and it cannot be expected to lead to _______________ outcomes.