如图密闭装置的锥形瓶底放入用蒸馏水浸泡过的滤纸片，再将经消毒并充分吸胀的小麦种子若干平铺在滤纸片上．置于20℃恒温环境中，打开活塞（T），待U形管两侧液面平衡后关闭T，然后开始计时观察．

请回答问题：

（1）该装置用来测定____ ，开始计时后，U形管两侧的液面变化将是____ ．

（2）如果不做任何处理，该实验的最终结果是种子将会____，其原因可用反应式____ 表示．

（3）若要矫正室内气压等因素对读数造成的误差，应怎样设计对照实验？请简述设计方案：____ 

（4）如果将种子换为具有生物活性的植物叶片，将KOH溶液换为NaHCO₃溶液，同时给予适宜强度的光照，则该装置用来测定____ ，U形管两侧的液面变化将是____ ．

小明同学用已经调节好的天平测量物体的质量，操作情况如图所示，它的错误有

①能够使我们有足够去面对困难的力量                       ②可以促进与他人的交往

③能彻底解答“我们从哪里来，到哪里去”的问题        ④能够更好地理解他人、善待他人

阅读下面短文，从每小题所给的A、B、C、D四个选项中选出最佳选项。

C

    It's not just gloves that can help people keep warm in winter. Love can, too.

    A pair of 16-year-old American twins, Jack and Jake Moran, started a program called "Warm Hearts, Warm Hands" last month. Their aim was to collect new and used gloves with fellow students at Richards High School.

    "We started this program a few weeks ago after we saw something on the news about a student who got frostbite(冻伤的）riding his bike to school," Jack said. "I just kind of realized that there are so many kids who don't have or wear gloves. The school has started the collection competition among classes, and the class that collects the most gloves gets a pizza party.

    The twin brothers talked to other students about their program. Many teachers also joined in, bringing in gloves and encouraging their students to help meet the needs of local community members.

    "The conversations we are having now aren't so much about what actions we can take, but about ______▲_____ .This program has really shown me that I don't need to get on a plane and go to help refugees(难民）to make a difference. I can do it right here. I can do it every day." Jake said.

    More than 500 pairs of gloves have been collected in a month and more donations(捐赠品） are coming in every day, including hats and scarves.