单项选择题

A.百万年前森林大火的发生概率要远高于现代。
B.百万年前的智人不可能掌握取火用火的技能。
C.上述被发现的羚羊骨头不是被人控制的火烧焦的。
D.羚羊并不是智人所喜欢的食物。

相关考题

单项选择题 听力原文: A lot of people in the United States are coffee drinkers. Over the last few years, a trend has been developing to introduce premium specially blended coffees known as gourmet coffees into the American market. Boston seems to have been the birthplace of this trend. In fact, major gourmet coffee merchants from other cities like Seattle and San Francisco came to Boston, where today they engaged in a kind of coffee war with Boston's merchants. They are all competing for a significant share of the gourmet coffee market. Surprisingly, the competition among these leading gourmet coffee businesses will not hurt any of them. Experts predict that the gourmet coffee market in the United States is growing and will continue to grow to the point that gourmet coffee will soon capture a half of what is now a 1.5 million-dollar market and will be an 8 million-dollar market by 1999. Studies have shown that coffee drinkers who convert to gourmet coffee seldom go back to the regular brands found in supermarkets. As a result, these brands will be the real losers in the gourmet coffee competition.What is the main topic of the news story?A.The coffee market in Boston.B.The role of supermarkets in the coffee business.C.A new trend in the United States.D.The advertising of a new product.

单项选择题 某一公司的放映室内有一排6把椅子,从左到右的编号依次为1,2,3,4,5,6。每天中午恰好有5个经理(F,G,H,I,J)坐在这些椅子上观看国际新闻影片,且根据以下条件: (1) 6把椅子中总有一把是空的; (2) I只会坐在奇数号椅子上; (3) J总是坐在从左数第3个人的位置上,但不一定是坐在3号椅子上; (4) G总是恰好坐在F的右边。G不能坐在下面哪一把椅子上?()

单项选择题 SECTION C NEWS BROADCASTDirections: In this section, you will hear several news items. Listen to them carefully and then answer the questions that follow.听力原文: One of the biggest surveys of public opinion ever conducted around the world suggests that only 30 percent of people feel that their country is governed by the Will of people. The Gallup international Voice of the People 2005 poll commissioned by the BBC questioned more than 51 thousand people in 68 countries. Only in Scandinavia and South Africa did the majority say they believe that they are governed according to their wishes. A little under half of those questioned globally thought elections in their countries were free and fair. Only 13 percent said they trusted politicians and at least 20 percent wanted more power to go to other groups, such as intellectuals. Which of the following statement is NOT true?A.Only 30 percent of the questioned feel that their country is governed by the will of people.B.More than half of those questioned thought elections in their Countries were free and fair.C.13 percent said they trusted politicians.D.At least 20 percent wanted more power to go to other groups.