Which of the following can replace the title of this passage?
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1 .In what sense was Toby "safe"?
A The overhanging rock would protect him from falling rocks. B He felt a hand on his shoulder. C His rucksack was protected. D He had hidden under a canopy.
2 .What have scientists found about Saturn?
A They have found a new moon orbiting Saturn. B They have found methane-based life on Saturn. C They have found methane-based life on Titan. D They have found earthlike life on a Saturn's moon.
3 .What do scientists say about Titan?
A There are life clues there. B There is acetylene there. C Water on Titan exists in the form of ice. D Rivers and lakes there contain life forms.
4 .To date, scientists have not yet detected this form of life… (paragraph 5). What does "this form of life" refer to?
A Water-based life. B Methane-based life. C Liquid-water-based microorganisms. D Gas-based life.
5 .What can be inferred from what Allen said?
A Scientists have different arguments over whether there is life on Titan. B Scientists all agree that there is life on Titan. C Scientists all suggest that a biological explanation is reasonable. D Scientists all agree that a non-biological chemical reaction is a possible explanation.
7 .What is the result of the research at the University of Chicago, according to the first paragraph?
A Girls comfortable with their own math skills are better than boys at math. B Girls uncomfortable with their own math skills are not as good as boys at math. C Female teachers' math skills have influence over girl students' math skills. D Female teachers' confidence in their math skills is related ...
8 .What is implied in the third paragraph?
A Math teachers, like math learners, do not like the subject due to its difficulty. B A difficult subject like math may affect teachers' confidence in teaching the subject. C Teachers are more anxious teaching math than their students learning math. D Math is so difficult that no teachers like to te...
9 .防止黑客进入的主要措施有（ ）。
A 制定相关法律 B 采用防火墙 C 安装防毒软件 D 建立防黑客扫描和检测系统
10 .According to the experiment, those teachers were probably anxious about math when they felt_____.
A nervous memorizing the numbers of a sales receipt B helpless saving the numbers of a sales receipt C uneasy reading the numbers of a sales receipt D hopeless filling in the numbers of a sales report
