2022 英语周报 高一外研 29答案

第一节One possible versionear Jona,Im glad to hear from you and I' d like to share wyou something about serving chopsticksServing chopsticks are mainly used to take food fromshared dishes. You can add food to your bowl with thembut never place them into your mouth or your own bowlUsing serving chopsticks can prevent diseases from sprea-ding while we are eating together. We can alsq use them toput food into others bowls, thus creating a pleasant andharmonious dining atmosphereHoping youll come to China to experience theem afirst handYoursUa

7.答案:C解析:不妨设双曲线的一条渐近线方程为y=-x,所以+bc,所以b2,得c=2a,所以双曲线的离心率2故选C.

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