Thanks to ________________natural resources, Russia's economy has grown by an average of 7% a year for the past decade. A: abundant B: abandon C: scarce D: scarcity

In world economy， the G7 refers to those seven countries with the world's largest developed economies — France， Germany， Italy， Japan， the United States， the United Kingdom， and Canada， — all of which are trade powers of the world.。（ ）

中国有12亿多人口,陆地自然资源人均占有量低于世界平均水平。() A: China has a<br/>population of more than 1.2 billion, and its land natural resources<br/>per capita are lower than the world’s average. B: China’s<br/>population is 1.2 billion and the natural resources on the land per<br/>head are lower than the world’s average level. C: The 1.2 billion<br/>people in China have lower land natural resources than in the world<br/>each. D: The land natural<br/>resources 1.2 billion Chinese have are less than the world has.

Which of the following is NOT one of the factors to cause America’s entry into World War I？

Brazil is the world’s second largest producer of ______. A: biofuel B: fossil fuel C: corn fuel D: ethanol fuel