Which of the following microbe commonly causes peptic ulcer disease?单项选择题

A

Helicobacter pylori

B

Escherichia coli

C

Neisseria gonorrhoeae

D

Staphylococcus aureus

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Heliobacter pylori is a bacterium that affects the stomach. What effect does it have? on this organ?

Question at position 16 Which is FALSE about Helicobacter pylori:There is only one geographic typeIt is well adapted to humansIt has infected humans for thousands of yearsIt causes ulcersClear my selection

Why didn't Dr. Marshall's colleagues believe that peptic ulcers could be caused by bacteria?

Section A: Read the text and answer the questions. Brutalism is an architectural style, introduced in the 1950s. It uses exposed concrete to create geometric structures with a grey appearance. Concrete buildings are often criticised as cold and ugly, lacking the warmth of stone or the smooth feel of steel. However, concrete, as a building material, has unique characteristics. It is extremely flexible when wet, and is adapted to create interesting shapes. Many urban public buildings, such as universities, have also used concrete as the main material to indicate strength and permanence. Instead of keeping Brutalist buildings, many are being demolished to make space for modern styles. However, this does not acknowledge the cultural history of these buildings, and is not sustainable. Fill in the gap with ONE WORD from the paragraph. 1. Brutalist architecture included exposed concrete, which gave a cold Answer Question 1[input] .

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