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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】植物进化的历程大致是（ ）
A.
藻类植物→蕨类植物→苔藓植物→被子植物→裸子植物
B.
藻类植物→苔藓植物→蕨类植物→裸子植物→被子植物
C.
苔藓植物→藻类植物→蕨类植物→裸子植物→被子植物
D.
苔藓植物→藻类植物→蕨类植物→被子植物→裸子植物
【单选题】—He’s never seen the film Rio2 (里约大冒险2) before, _________ he? —_________. He went to see it last week.
A.
has; Yes
B.
has; No
C.
hasn’t; Yes
D.
hasn’t; No
【单选题】There’s something about the Internet that can bring out meanness in teenagers. That is one finding of a study to be released Wednesday, reporting that nine in ten teenagers say they have witnessed cru...
A.
something about the Internet lets teenagers suppress their anger
B.
social networks are no longer popular among teenagers
C.
cruelty and meanness prevail among teenagers on social networking sites
D.
few of the teenagers surveyed report positive feelings toward the Internet