【单选题】Passage 2In the past two years, millions of Americans have suddenly taken an interest in the bicycle as if it were a startling new invention. Annual bike sales doubled between 1960 and 1970, and there...
【单选题】Which thematic progression pattern has been used in this paragraph? Hemp?s environmental credentials are indisputable. It grows better in organic systems than in conventional ones. It smothers weeds a...