I want to ask you a question, it s very urgent!!

There are two hybrid modes of BYD, one is the sports mode, the engine is always on regardless of any working conditions, and can cope with intense driving at any time; The other is ECO mode, which turns the engine on or off depending on the load at the time (most of the time reflected in the speed). So in order for you to experience acceleration when you test drive, the sales should use the sport mode. Switch to EC

Rabies is more terrible than cancer. Medical experts point out that cats and dogs have rabies virus and bacteria. If a person is bitten or scratched by a cat or dog, or even after touching a cat or dog as long as there is a slight wound, after a period of rabies incubation period, rabies symptoms such as irritability, panic, trismus, fear of light and water may occur.

Once the disease develops, typical symptoms and signs appear, death is assured, and the case fatality rate is 100%!

And there will be some small wounds on people's ** that are more or less invisible to the naked eye. These subtle breakages can spread rabies as long as they come into contact with dogs and cats. This also explains that the so-called civilized dog keeping on a leash is not effective in preventing rabies.

Vaccinating dogs and cats against rabies does not guarantee that the rabies vaccine is 100% effective. The surest way to prevent rabies is to resolutely oppose the unhealthy practice of owning cats and dogs!

(1) Easy to know, a1 0, q 0The original inequality is equivalent to sn s(n+2) s(n+1).When q=1, sn=na1

Apparently true. When q 0 and q ≠1, sn=a1(q n-1) (q-1)From 1+q 2q can be reversed sn*s(n+2) s(n+1).

b) c=a1 (1-q)a1＞0,0＜q＜1.

According to the chaotic question, the original four-digit number is: 1abc (where 1 is the number in the thousands, a is the number in the hundreds, b is the number in the ten places, and c is the number in the first place), and now we might as well set abc=x, then the original four digits will become the two-digit number on the Xingzhou loose form 1x (where 1 becomes the number in the ten digits, and x becomes the number in the single digit), so the original four-digit number can be written:

10x+1.

Can you read it?

10x is a thousand, one is a digit, and the sum is four digits.