题目

某校同学开展了如图所示“溶液酸碱性的检验”的实验活动： （1）把自制的紫薯汁按图1所示分别滴加到试管中，观察到的现象如下表所示 溶液白醋盐酸蔗糖水草木灰水石灰水 加入紫薯汁之后的颜色红色红色紫色绿色绿色 ①图1中存放紫薯汁的仪器名称是 ． ②据上表推测，紫薯汁遇到稀硫酸溶液可能显示的颜色是 ，该汁液 （填“能”或“不能”）作酸碱指示剂． （2）用pH试纸测定图1中部分溶液的酸碱度：草木灰水pH＞7，属于 （填“酸性”、“My dad and I both love music. He taught me how to play some pop songs on the piano and he is teaching me to play the drums and sing. He even creates custom tracks (自定义音轨) for me to help me perform my best!— Samantha, age 11, California, USAMy dad encourages me to do my best in school so I can achieve my dream of being an animal doctor someday. He also encourages me to try new things and do sports. We often go camping, rock climb, hike, and ride bikes. I love that my dad likes to go on adventures (冒险) with me!— Isabella, age 10, Nevada, USAMy dad is funny, and he has given me a good sense of humor (幽默感), too. He teaches me to make the best of a situation, even if it’s difficult or scary. He also tells me that laughter is the best thing to make me feel better. — Lila, age 12, California, USAMy dad has taught me never to give up, no matter how hard things get. He helps me realize that even if I don’t get a perfect mark on a test or something, it is not the end of the world. He has taught me that I can learn from my mistakes and work harder the next time.— Jane, age 11, British Columbia, Canada根据材料内容选择最佳答案。1. We can learn from the material that Samantha’s father ______.A. is a musician B. can play the pianoC. wants her to be a singerD. is good at writing pop songs2.Isabella’s father encourages her to do many things EXCEPT ______ .A. to play sportsB. to try new thingsC. to work hard for her dreamD. to travel around the world3.What does Lila think of her father?A. Hard-working. B. Patient.C. Brave. D. Humorous.4. Jane’s father has taught her ______.A. to learn from her mistakesB. to learn from her classmatesC. how to work smartlyD. how to get a perfect mark on a test5.Which of the following is TRUE according to the material?A. The four children are of the same age.B. Samantha and Jane are from the same country.C. The four children learn a lot from their fathers.D. Isabella thinks that laughter is the best thing to make a person feel better.