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English Junior High

32、33、34、35がわからないです。 教えてくださいませんか? メチャクチャ急いでます

の英文の内容に関して (31) から (35)までの質問に対する答えとして最も 4[C] 切なものを 1,2,3,4の中から一つ選び、その番号のマークをぬりつぶしなさい。 Abbie Burgess About 200 years ago, there were no airplanes or trains in the United States, so people used ships to travel. Some areas were very dangerous for ships, so lighthouses* were built in these places. At night, people on ships knew they had to be careful when they saw the light on the top of a lighthouse. The people who took care of lighthouses were called lighthouse keepers, and their job was very important. In 1853, a 14-year-old girl named Abbie Burgess moved to an island in Maine with her family. No other people lived on the island, and Abbie's father was the lighthouse keeper. Abbie helped her father in the lighthouse. She learned how to clean the lights in the lighthouse and do many other things. The lights had to shine* brightly until morning. Just before winter in 1856, Abbie's father had to leave the island to buy food. He had to go 25 miles by boat to get to the nearest town. He told Abbie to take care of their family and the lighthouse. After he left, a big storm came, and it was the biggest storm in 100 years. It rained and snowed for four weeks, so Abbie's father could not return to the island. Abbie took care of the lighthouse by herself for one month. Finally, Abbie's father came back. He was very happy because his family was safe. Abbie did a great job. Her work saved many people's lives. Abbie became the assistant* lighthouse keeper in 1862. EDEL *lighthouse: T *shine: 3 assistant: 補佐の (31) What did lighthouses do? 1 They helped ships to find other ships. 2)They told ships about dangerous areas. 3 They told people that storms were coming. 4 They helped people on land at night. (32) When did Abbie Burgess move to the island? 1 in 1852. 2 In 1853. 3 In 1856. 4 In 1862. (33) Why did Abbie's father have to leave the island? 1 To get food. 2 To find a job. 3 To see his family. 4 To help people on a ship. (34) How long was the big storm? 1 One week. 2 About two weeks. 3 About a month. 4 100 days. (35) What is this story about? 1 The oldest lighthouse in the United States. 2 A young girl who took care of a lighthouse. 3 People traveling by ship in the 1800s. 4 A famous island in Maine.

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Mathematics Junior High

この問題の⑵でなぜ帯分数になおすか、そしてなぜ60をかけるのか教えてください。

ⓒ P.66~67 4 3 A駅とC駅の間にB駅があり、A駅とC駅 の間を一定の速さで運行する普通列車と特急 列車がある。 A駅からC駅に向かう普通列車は,午前9時 にA駅を出発し, 12km離れたB駅に午前 9時16分に到着した後, B駅で2分間停車し、 B駅を出発してから20分後にC駅に到着した。 C駅からA駅に向かう特急列車は,午前9時 12分にC駅を出発し, B駅には停車せずに通 過して、 午前9時36分にA駅に到着した。 下の図は,普通列車がA駅を出発してからの 時間と, A駅からの道のりとの関係をグラフ に表したものに, 特急列車がC駅を出発して 運行したようすをかき入れたものである。 (km) (C駅) 27 (B駅) 12 12 16 18 (A駅) O (1) B駅とC駅の間の道のりを求めなさい。 / / 普通列車は12kmを16分で進むから,速さは, 3 X 1/6=212 (km/min) 普通列車 すれちがう 特急列車 3638 普通列車はB駅からC駅まで20分で進むから, B駅とC駅の間の道のりは, x20=15(km) 分は,60×- 0x1/3=2 (分) 2)普通列車と特急列車がすれちがった時刻は 午前9時何分何秒ですか。 2つのグラフの交点の座標を求めればよい。 A駅とC駅の間の道のりは, 12+15=27(km) 特急列車のグラフは,2点 (12,27) (36,0)を通る直 だから、式を求めると、y=-1/3x+2/2 9 81 = 24 (秒) である。 ...1 普通列車のグラフ (18≦x≦38) は、2点 (18,12), ( 38, 27) を通る直線だから, 式を求めると、 3 15km ①を②に代入すると、1/3x+20/2=1212411-121212 9 -9x+324=6x-12 数の x=1.12 (=222/23) 両辺に 8をかけな 午前9時 22分 24

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