1 . 他面对如此棘手的问题，感到束手无策。 (Such…; face)
Such _____________________ that he doesn’t know how to deal with it/what to do with it.

2 . 这些建筑有其独特的文化价值，值得研究和保护。(worth)
These buildings have their unique cultural values, so they _____________________ .

3 . Wounded soldiers will ________ by the robotic instruments in the battlefield mobile surgical unit remotely guided by doctors.
受伤的士兵会由医生远程指导战场机动外科手术室单元的机器人设备做手术。

4 . There is a time-lag between theoretical research and ________.
往往理论研究和实际应用之间存在时滞。

5 . 亚马逊公司，其总部设在西雅图(Seattle)，在过去的十年里经历了快速的发展，成为了全球最大的网上书店。(locate)
Amazon.com, ____________________________________________, has gone through rapid development and become the world’s largest online bookstore in the past decade.

6 . 随着圣诞节的临近，许多家庭开始用彩灯来装饰他们的房子。(approach)
______________________, many families began to decorate their houses with colored lights.