A. WITH B. ON C. BY D. THROUGH A. WITH B. ON C. BY D. THROUGH

10. A. with B. on C. by D. throughX. Read the passage and choose the best answer A, B, C, D.The year was 1976. The people cheered. Two American spaceships had landed on Mars. Theships would help them learn about Mars. But most people just wanted to know one thing. Is therelife on Mars? The ships took pictures. These pictures were sent to Earth in the form of signals. OnEarth, the signals were changed back into pictures. People looked at them closely. They saw a pinksky. They saw red rocks. They saw red soil. But they saw no animals or plants. The ships scrapedup soil. It was tested. There might be plants in it. They might be too small to see. The ships senttheir tests back to Earth. People were puzzled. Some of the tests seemed to show life. Some did not.People decided that the tests showed nothing for sure. Is there life on Mars? We still don’t know.We might know someday. But, someday we could be the life on Mars!