Bộ 2 đề thi giữa kì 2 Tiếng Anh 11 năm 2024-2025 có đáp án - Đề 1

A rather surprising geographical feature of Antarctica is that a huge freshwater lake, one of the world's largest and deepest, lies hidden there under four kilometers of ice. Now known as Lake Vostok, this huge body of water is located under the ice block that comprises Antarctica. The lake is able to exist in its unfrozen state beneath this block of ice because its waters are warmed by geothermal heat from the earth's core. The thick glacier above Lake Vostok actually insulates it from the frigid temperatures on the surface. The lake was first discovered in the 1970s while a research team was conducting an aerial survey of the area. Radio waves from the survey equipment penetrated the ice and revealed a body of water of indeterminate size. It was not until much more recently that data collected by satellite made scientists aware of the tremendous size of the lake; the satellite-borne radar detected an extremely flat region where the ice remains level because it is floating on the water of the lake.

The discovery of such a huge freshwater lake trapped under Antarctica is of interest to the scientific community because of the potential that the lake contains ancient microbes that have survived for thousands of years, unaffected by factors such as nuclear fallout and elevated ultraviolet light that have affected organisms in more exposed areas. The downside of the discovery, however, lies in the difficulty of conducting research on the lake in such a harsh climate and in the problems associated with obtaining uncontaminated samples from the lake without actually exposing the lake to contamination. Scientists are looking for possible ways to accomplish this.

Building Confidence in Teens

Confidence is one’s belief in their own ability. Confident people rationally believe they are (16)_____ of doing things well and therefore aren’t afraid to do those things or even try new things. Teens (17) _____ are confident to grow up have a good sense of self and become happy adults. Parents can help teens build their confidence throughout their adolescence by following these tips:

Be trustworthy. Be there when your teen needs you. Provide a safe home environment and firm but fair discipline. This is a foundation that your teen’s confidence can stand on.

Give your teen choices. One of the things that confidence helps teens do is making a decision. You can help teens make decision by (18) _____ them choices as often as possible.

Encourage your teen to try new things. Be available to take them where they need to go and do so many things (19) _____ complaining.

Become your teen’s biggest fan, whether it is in sports, or in school.

Allow your teen to fail, do not fix their problems for them. If they need you to help talk the problem through, ask open ended questions so that they (20)_____ to their own conclusions.

Praise your teen when praise is suitable. We know that too much praise is not good, but suitable praise is necessary for your teen’s self-confidence.