Cho hình thang ABCD (AB//CD) có AB<CD và góc D > góc C. Trên cùng một nửa mặt phẳng bờ DC chứa hình thang, vẽ tia Cx sao cho góc xCD = góc D; Cx cắt đường thẳng AB tại E. Chứng minh

1. AECD là hình thang cân

2. góc DBE > góc DAE; góc DBE > góc CEA

3. DE > DB, rồi suy ra AC>DB

Complete the sentences with the verbs in brackets. Use the future simple passive.

                               Life at the end of the century

1.  Everything about you                                      (monitor)

2.  Your pulse                                       (take) by mirror in your bathroom.

3.  Your weight                                        (check) by bathroom scales built into the floor.

4.  Your kitchen robot                                       (set up) to make your tea when you get up.

5.  Your daily menu                                       (optimize) to match your activities.

6.  Your food                                       (order) online by your fridge.

7.  Your pizza                                       (make) by a 3D printer.

8.  Solar panels                                       (build) into building materials to power your house.

9.  Your feelings                                       (analyze) by sensors in your mobile phone.

10. And everything                                       (tailor) to your own needs.

Giải nghĩa từ: phúc đức. Tìm các từ có yếu tố đức (cùng nghĩa với đức trong từ phúc đức)