The discovery of the antibiotic penicillin in 1928 has not produced antibiotics useful for the treatment of infectious diseases until 1940.

Câu hỏi liên quan

• There was a very interesting news on the radio this morning about the earthquake in Italy.

• One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

  If we will reduce the speed of population growth, there will be less pressure on the earth. 

• Lunar eclipses happen only if the Moon is full, but they do not occur at an every full Moon.

ZUNIA12

• The number of student attending English courses at our university are increasing.

• If the world's tropical forests continue to disappear at their present rate, many animal species ____________ extinct. 

• The medical problems of parents and their children tend to be very similar to because of the hereditary nature of many diseases.

• All employee will be given an electric badge for entrance and exit purposes

• Many people have stopped to smoke because they are afraid that it may be harmful to their health.

• When a pearl is cut in half and examined under a microscope, but its layers can be seen.

• Philosophy, the inquiry into the nature of  human knowledge, it is still a very popular subject among university students

• You can see .................. moon in .................. sky at .................. nigh. 

• A calorie is the quantity of heat required to rise one gallon of water one degree centigrade at one atmospheric pressure.

• An octopus has three hearts to pump blood throughout their body.

• Indiscriminately dumping of waste material and inadequate sewage treatment are two serious causes of environmental pollution.

• Many roads and railroads were built in the 1880s because of the industrial cities needed a network to link them with sources of supply.

• People with exceptionally high intelligence quotients may not be the best employees since they become bored of their work unless the job is constantly changing

• Bacteria are responsible of many of the textures and flavors in our food and are particular important in milk products.

• Hurry! We're got to leave the house immediately. Otherwise, __________ the opening ceremony. 

• In human beings, as in other mammal, hairs around the eyes, in ears and in the nose prevent dust, insects, and other matters from entering these organs.

• Last night there was .......... singing outside my house.