题目

用细线标注出洋葱根尖的四个分区，培养一段时间后，间距变化最大的部分是（ ） A . 根冠 B . 伸长区 C . 分生区 D . 成熟区 答案：BRead and choose. (根据句意，选择单词)1.______ season do you like best?2. -Who's ______ busiest one in your family?     -My mother.3. -When do you usually get up?   -I usually get up ______7:00 in the morning.4. Tell us ______ your day !5. The weather report says ______ rain tomorrow.6. Winter is beautiful, but it's ______ cold for me.7. -When is the ______ time to go to Beijing?     -Fall.8. I am sending Grandpa ______ e-card.9. The seasons are all beautiful and I can find many things ______ do.10. Peter, there is a call ______ you.