As a saying goes, he who doesn't reach the Great Wall is not a true man. The Great Wall in China ____(impress) everyone who sees for the first time ____ the general tourists to scholars. The vastness of the structure helps children grasp the great ____(achieve) in human history and can help inspire them ____ (learn) more about human success over one thousand years.____ (construct) over a period of 2,000 years, the stone solider ____(actual) consists of many great walls, some of____date back to the fifth century B.C. The first emperor of China, Qin Shi Huang,____ (order) these earlier long wall sections linked and extended with watchtowers to protect the new empire from northern tribes. Succeeding emperors and dynasties continued the construction.____ (spread) westward into the Gobi desert to guard____Silk Road. All together, the walls may have stretched more than 30,000 miles.

 某合作学习小组的同学们．欲测定一定量的某种石灰石样品中碳酸钙的质量，进行了如下实验：

This is Jim’s room. It’s a nice room. Some pictures are on the wall (墙). There’s a desk and a chair in his room. There is a sofa and a bookcase, too. The desk is between (在……之间) the bed and the bookcase. His backpack and pencil case are on the desk. His pencils, pen and ruler are in the pencil case. His sofa is near the desk. His baseball is under the bed.