Which of the following statement is the appropriate description of cast?
A: the hardened resin of tree sap trapped organisms within it, sealing them from the atmosphere
B: a mineral-matter filling of a hollow space left by a dissolved shell
C: a shell is buried in sediment and then dissolved, leaving the sediment to take the shape of the organism
D: a filling of a life form’s pore spaces and cavities with precipitated minerals
A: the hardened resin of tree sap trapped organisms within it, sealing them from the atmosphere
B: a mineral-matter filling of a hollow space left by a dissolved shell
C: a shell is buried in sediment and then dissolved, leaving the sediment to take the shape of the organism
D: a filling of a life form’s pore spaces and cavities with precipitated minerals
B
举一反三
- Which of the following scenarios can lead to the formation of a kame? A: Sediment accumulates in a hole in the ice B: Sediment is carried on top of the glacier C: Sediment collects in subglacial stream channels D: Sediment covers a stagnant block of ice
- Which of the following is not a feature of 'shell' () A: It's a low-level interface to the operating system. B: You can type shell commands from the console. C: You can write shell scripts. D: Linux supports multiple 'shell'.
- A variety of gases trapped in the Earth’s atmosphere can ensure life on Earth because they are ______.
- Which of the following best describes the formation of “desert pavement”? A: alluvial fans are eroded to form inselbergs with flat, angular rocky surfaces B: runoff and deflation carry off the fine particles of silt and clay, leaving coarser particles behind C: groundwater in an alluvial fan evaporates, leaving behind a surface layer of hard-baked mud and boulders D: deflation removes the coarse fragments leaving behind a layer of fine sediment (loess and mud)
- Which of the following determines the distribution of the extracellular fluid between the plasma and interstitial spaces? A: Sodium and protein concentrations in the extracellular fluid B: Balance between hydrostatic and colloid osmotic forces C: Osmotic pressure within cells surrounding an interstitial space D: Water concentration within the interstitial spaces
内容
- 0
Which of the following compressions in the soil under loading cannot be ignored（） A: soil particles B: interparticle pore C: sealing gas D: water in the soil
- 1
Which kind of language can be used to filling in the UK’s landing card?
- 2
Filling the following blanks with appropriate words according to the meaning in Chinese.The rescue team was working against the clock to save the _______ (受困的) tourists
- 3
雨课堂: Tax Incentives of EIT can take which of the following form(s)?
- 4
Complete following sentences by filling in each blank with the proper form of the word given in brackets. It ________ (frustration) me that I failed the exam again.