| After flexing its mechanical arm and
finding some puzzling chemistry in a patch of Martian soil,the robotic rover
Spirit began investigating the composition of a rock named Adirondack yesterday
with two science instruments and a microscopic camera. Following programmed instructions from flight controllers, the six-wheel rover made several short turns and moved forward about six feet. It stopped within inches of the pyramid-shaped rock, about the size of a football. It was the vehicle’s second maneuver on the Martian surface since landing there on Jan. 3. Scientists at the Jet Propulsion Laboratory in Pasadena, Calif., said they did not expect results of the first rock examination until early today. But they were already both pleased and puzzled over the soil test results. "We’re starting to put together a picture of A. Two. They are the mechanical arm and the microscopic camera. B. Three. They are the two science instruments and a microscopic camera. C. Four. They are the two science instruments, a microscopic camera and the flight controller. D. Five. They are the two science instruments, the two flight controllers and a microscopic camera and the flight controller. [单项选择]After flexing its mechanical arm and finding some puzzling chemistry in a patch of Martian soil,the robotic rover Spirit began investigating the composition of a rock named Adirondack yesterday with two science instruments and a microscopic camera.
Following programmed instructions from flight controllers, the six-wheel rover made several short turns and moved forward about six feet. It stopped within inches of the pyramid-shaped rock, about the size of a football. It was the vehicle’s second maneuver on the Martian surface since landing there on Jan. 3. Scientists at the Jet Propulsion Laboratory in Pasadena, Calif., said they did not expect results of the first rock examination until early today. But they were already both pleased and puzzled over the soil test results. "We’re starting to put together a picture of what the soil at Gusev is really like," Dr. Steven W. Squyres of Cornell, the principal scientist of the mission, said at a news conference in Pasadena. He w A. Two. They are the mechanical arm and the microscopic camera. B. Three. They are the two science instruments and a microscopic camera. C. Four. They are the two science instruments, a microscopic camera and the flight controller. D. Five. They are the two science instruments, the two flight controllers and a microscopic camera and the flight controller. [填空题]After reaching its (21) in 1990s, journalism seems to be cast in bleak and grim prospects. We are enduring the worst (22) in the advertising market since at least the 1950s.
Yet, I am (23) about the future of journalism. Journalism is the business of bringing information and opinion about public affairs to a mass audience. So long as the people want to know the world around, they will want (24) . In fact, the growth of journalism is rapid and all (25) than any change since the advent of cheap (26) , newspaper, radio or other mass media. However, contrasts are obvious. Over the past decade and a half, many newsmagazines are dying, but the (27) , also a news magazine, flourishes. The TV networks are (28) . The American networks’ evening programs have only a little more than half the audience they had a decade ago. Yet there is more and better news and information program available to 我来回答: 提交
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