日本许多汽车行业的知名企业纷纷到美国投资建厂，是因为美国（ ）
A：国土辽阔，资源丰富
B：经济发达，汽车市场广阔
C：生产成本低，规模效益大
D：汽车生产技术落后于日本
— Three days________.
① Are these all ours? ____ A. It is Zhang Peng's.
② Whose is it? ____ B. Yes，it is.
③ Is this yours?____ C. Yes. they are.
The extraordinary success of Conan Dole, mainly with his Sherlock Homes, has_________ the market with detective stories.
自然界中，生物与环境相互作用，适应者生存下来并不断的延续和发展着．有关生物进化的研究总是与遗传学分不开，请分析并完成下列问题：
